Parabolas $P_1, P_2$ share a focus at $(20,22)$ and their directrices are the $x$ and $y$ axes respectively. They intersect at two points $X,Y.$ Find $XY^2.$

[i]Proposed by Evan Chang[/i]
1. **Identify the properties of the parabolas:**
   - The focus of both parabolas is at \((20, 22)\).
   - The directrix of \(P_1\) is the \(x\)-axis, and the directrix of \(P_2\) is the \(y\)-axis.

2. **Determine the equations of the parabolas:**
   - For \(P_1\) (directrix is the \(x\)-axis):
     The general form of a parabola with focus \((h, k)\) and directrix \(y = d\) is:
     \[
     (x - h)^2 + (y - k)^2 = (y - d)^2
     \]
     Here, \(h = 20\), \(k = 22\), and \(d = 0\). Substituting these values, we get:
     \[
     (x - 20)^2 + (y - 22)^2 = y^2
     \]
     Simplifying, we get:
     \[
     (x - 20)^2 + (y - 22)^2 = y^2 \implies (x - 20)^2 + 484 - 44y + y^2 = y^2 \implies (x - 20)^2 + 484 = 44y \implies y = \frac{(x - 20)^2}{44} + 11
     \]

   - For \(P_2\) (directrix is the \(y\)-axis):
     The general form of a parabola with focus \((h, k)\) and directrix \(x = d\) is:
     \[
     (x - h)^2 + (y - k)^2 = (x - d)^2
     \]
     Here, \(h = 20\), \(k = 22\), and \(d = 0\). Substituting these values, we get:
     \[
     (x - 20)^2 + (y - 22)^2 = x^2
     \]
     Simplifying, we get:
     \[
     (x - 20)^2 + (y - 22)^2 = x^2 \implies (x - 20)^2 + (y - 22)^2 = x^2 \implies (y - 22)^2 + 400 - 40x + x^2 = x^2 \implies (y - 22)^2 + 400 = 40x \implies x = \frac{(y - 22)^2}{40} + 10
     \]

3. **Solve the system of equations:**
   - We have the equations:
     \[
     y = \frac{(x - 20)^2}{44} + 11
     \]
     \[
     x = \frac{(y - 22)^2}{40} + 10
     \]
   - Substitute \(y\) from the first equation into the second equation:
     \[
     x = \frac{\left(\frac{(x - 20)^2}{44} + 11 - 22\right)^2}{40} + 10 \implies x = \frac{\left(\frac{(x - 20)^2}{44} - 11\right)^2}{40} + 10
     \]
   - Let \(u = x - 20\), then:
     \[
     x = \frac{\left(\frac{u^2}{44} - 11\right)^2}{40} + 10
     \]
     Simplifying further, we solve for \(u\) and then back-substitute to find \(x\) and \(y\).

4. **Find the intersection points:**
   - Solving the above system, we find the intersection points \(X\) and \(Y\) to be:
     \[
     x = y = 42 - 4\sqrt{55} \quad \text{and} \quad x = y = 42 + 4\sqrt{55}
     \]

5. **Calculate \(XY^2\):**
   - The distance \(XY\) is given by:
     \[
     XY = \sqrt{(42 + 4\sqrt{55} - (42 - 4\sqrt{55}))^2 + (42 + 4\sqrt{55} - (42 - 4\sqrt{55}))^2} = \sqrt{(8\sqrt{55})^2 + (8\sqrt{55})^2} = \sqrt{2 \cdot (8\sqrt{55})^2} = \sqrt{2 \cdot 64 \cdot 55} = \sqrt{7040} = 8\sqrt{55}
     \]
   - Therefore, \(XY^2\) is:
     \[
     XY^2 = (8\sqrt{55})^2 = 64 \cdot 55 = 3520
     \]

The final answer is \(\boxed{3520}\)