Q: Is 2,121,100 a Prime Number?
A: No, 2,121,100 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 2121100 can be evenly divided by 1 2 4 5 10 20 25 50 100 21,211 42,422 84,844 106,055 212,110 424,220 530,275 1,060,550 and 2,121,100, with no remainder.
Since 2,121,100 cannot be divided by just 1 and 2,121,100, it is not a prime number.