Square of Small-Digit Palindromic Number is Palindromic/Examples/111,111

Example of Square of Small-Digit Palindromic Number is Palindromic

 * $111 \, 111^2 = 12 \, 345 \, 654 \, 321$

Proof
111111 x   111111 --    111111    1111110   11111100  111111000 1111110000 11111100000 --- 12345654321