Case 1: The palindromic sum is 99
Case 2: The palindromic sum is 66066
Case 3: The palindromic sum is 242
Case 4: The palindromic sum is 8
Case 5: The palindromic sum is 6617887166
Case 6: The palindromic sum is 89188088198
Case 7: The palindromic sum is 8813200023188