Q: Is 21,231,666 a Palindrome?
A: No, the number 21,231,666 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:
21231666
Now we reverse it like this:
66613212
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 21231666 = 66613212?
Answer:
NO, so that means the number 21,231,666 is not a palindrome!
Here are more examples of potential palindrome numbers in sequence:
| Number | 21,231,664 | 21,231,665 | 21,231,667 | 21,231,668 |
| Palindrome? | no | no | no | no |