Which one below cannot be expressed in the form $x^2+y^5$, where $x$ and $y$ are integers?

$ 
\textbf{(A)}\ 59170
\qquad\textbf{(B)}\ 59149
\qquad\textbf{(C)}\ 59130
\qquad\textbf{(D)}\ 59121
\qquad\textbf{(E)}\ 59012
$
1. We need to determine which of the given numbers cannot be expressed in the form \( x^2 + y^5 \), where \( x \) and \( y \) are integers.
2. First, we consider the possible values of \( y^5 \mod 11 \). Since \( y^5 \) is a power of \( y \), we can use Fermat's Little Theorem, which states that \( y^{10} \equiv 1 \pmod{11} \) for any integer \( y \) not divisible by 11. Therefore, \( y^5 \equiv \pm 1 \pmod{11} \) or \( y^5 \equiv 0 \pmod{11} \) if \( y \equiv 0 \pmod{11} \). Thus, \( y^5 \equiv 0, \pm 1 \pmod{11} \).

3. Next, we consider the quadratic residues modulo 11. The quadratic residues modulo 11 are the possible values of \( x^2 \mod 11 \). These are \( 0, 1, 3, 4, 5, 9 \).

4. We need to check each number to see if it can be expressed as \( x^2 + y^5 \mod 11 \):
   - \( 59170 \mod 11 = 59170 - 11 \times 5370 = 0 \)
   - \( 59149 \mod 11 = 59149 - 11 \times 5372 = 7 \)
   - \( 59130 \mod 11 = 59130 - 11 \times 5370 = 0 \)
   - \( 59121 \mod 11 = 59121 - 11 \times 5371 = 7 \)
   - \( 59012 \mod 11 = 59012 - 11 \times 5365 = 7 \)

5. We observe that \( 59121 \equiv 7 \pmod{11} \). If this number could be written in the form \( x^2 + y^5 \), we would have \( x^2 + y^5 \equiv 7 \pmod{11} \). However, the quadratic residues modulo 11 are \( 0, 1, 3, 4, 5, 9 \), and \( y^5 \equiv 0, \pm 1 \pmod{11} \). Therefore, \( x^2 + y^5 \) can only be \( 0, 1, 2, 3, 4, 5, 8, 9, 10 \pmod{11} \). Since 7 is not in this list, it is impossible for \( 59121 \) to be expressed as \( x^2 + y^5 \).

Conclusion:
\[
\boxed{59121}
\]