### Short answer

The number **221,678 is NOT a PRIME** number.

#### How to check if the number 221,678 is a prime number

A prime number can be divided, without a remainder, only by itself and by 1. For example, 13 can be divided only by 13 and by 1. In this case, the number **221,678** that you looked for, **is NOT a PRIME number**, so it devides by **1,2, 271, 409, 542, 818, ** and of course **221,678**.