[asy]
draw((0,1)--(4,1)--(4,2)--(0,2)--cycle);
draw((2,0)--(3,0)--(3,3)--(2,3)--cycle);
draw((1,1)--(1,2));
label("1",(0.5,1.5));
label("2",(1.5,1.5));
label("32",(2.5,1.5));
label("16",(3.5,1.5));
label("8",(2.5,0.5));
label("6",(2.5,2.5));
[/asy]
The image above is a net of a unit cube. Let $n$ be a positive integer, and let $2n$ such cubes are placed to build a $1 \times 2 \times n$ cuboid which is placed on a floor. Let $S$ be the sum of all numbers on the block visible (not facing the floor). Find the minimum value of $n$ such that there exists such cuboid and its placement on the floor so $S > 2011$.
1. **Understanding the Problem:**
   We need to find the minimum value of \( n \) such that the sum of the visible numbers on a \( 1 \times 2 \times n \) cuboid made of unit cubes is greater than 2011. Each unit cube has numbers on its faces as shown in the diagram.

2. **Analyzing the Cube:**
   Each cube has six faces with the numbers 1, 2, 32, 16, 8, and 6. When the cubes are placed to form the cuboid, the face touching the floor will not be visible. We need to maximize the sum of the visible faces.

3. **Calculating the Sum of All Faces:**
   The sum of all numbers on a single cube is:
   \[
   1 + 2 + 32 + 16 + 8 + 6 = 65
   \]

4. **Visible Faces Calculation:**
   For each cube, one face is touching the floor, and five faces are visible. The sum of the numbers on the visible faces depends on which face is touching the floor. We need to consider the minimum sum of the face touching the floor to maximize the visible sum.

5. **Minimizing the Hidden Face:**
   The smallest number on any face is 1. If 1 is the face touching the floor, the sum of the visible faces is:
   \[
   65 - 1 = 64
   \]

6. **Total Visible Sum for the Cuboid:**
   The cuboid consists of \( 2n \) cubes. If each cube has a visible sum of 64, the total visible sum \( S \) is:
   \[
   S = 64 \times 2n = 128n
   \]

7. **Finding the Minimum \( n \):**
   We need \( S > 2011 \):
   \[
   128n > 2011
   \]
   Solving for \( n \):
   \[
   n > \frac{2011}{128} \approx 15.7109375
   \]
   Since \( n \) must be an integer, we take the smallest integer greater than 15.7109375, which is 16.

The final answer is \( \boxed{ n = 16 } \).