Q: Is 221,901 a Prime Number?
A: No, 221,901 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 221901 can be evenly divided by 1 3 17 19 51 57 229 323 687 969 3,893 4,351 11,679 13,053 73,967 and 221,901, with no remainder.
Since 221,901 cannot be divided by just 1 and 221,901, it is not a prime number.