Q: Is 221,067 a Prime Number?
A: No, 221,067 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 221067 can be evenly divided by 1 3 7 9 11 21 29 33 63 77 87 99 121 203 231 261 319 363 609 693 847 957 1,089 1,827 2,233 2,541 2,871 3,509 6,699 7,623 10,527 20,097 24,563 31,581 73,689 and 221,067, with no remainder.
Since 221,067 cannot be divided by just 1 and 221,067, it is not a prime number.