Q: Is 21,252 a Prime Number?
A: No, 21,252 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 21252 can be evenly divided by 1 2 3 4 6 7 11 12 14 21 22 23 28 33 42 44 46 66 69 77 84 92 132 138 154 161 231 253 276 308 322 462 483 506 644 759 924 966 1,012 1,518 1,771 1,932 3,036 3,542 5,313 7,084 10,626 and 21,252, with no remainder.
Since 21,252 cannot be divided by just 1 and 21,252, it is not a prime number.