Q: Is 21,970 a Prime Number?
A: No, 21,970 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 21970 can be evenly divided by 1 2 5 10 13 26 65 130 169 338 845 1,690 2,197 4,394 10,985 and 21,970, with no remainder.
Since 21,970 cannot be divided by just 1 and 21,970, it is not a prime number.