Q: Is 331,221,999 a Palindrome?
A: No, the number 331,221,999 is not a palindrome.
A palindromic number is number that remains the same when its digits are reversed.
Here's how to check if a number is a palindrome:
Step 1
Take the original number and reverse it.
Here is the original number color coded:
331221999
Now we reverse it like this:
999122133
Notice the colors are going in the opposite direction now
Step 2
Compare the two numbers. If they are exactly the same then the number is a palindrome.
Is 331221999 = 999122133?
Answer:
NO, so that means the number 331,221,999 is not a palindrome!
Here are more examples of potential palindrome numbers in sequence:
| Number | 331,221,997 | 331,221,998 | 331,222,000 | 331,222,001 |
| Palindrome? | no | no | no | no |