Q: Is 2,121,021 a Prime Number?
A: No, 2,121,021 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 2121021 can be evenly divided by 1 3 7 9 21 63 131 257 393 771 917 1,179 1,799 2,313 2,751 5,397 8,253 16,191 33,667 101,001 235,669 303,003 707,007 and 2,121,021, with no remainder.
Since 2,121,021 cannot be divided by just 1 and 2,121,021, it is not a prime number.