It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 216 122 is not a prime number.
For example, 216 122 can be divided by 2: 216 122 / 2 = 108 061.
For 216 122 to be a prime number, it would have been required that 216 122 has only two divisors, i.e., itself and 1.
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216 122 is an even number, because it is evenly divisible by 2: 216 122 / 2 = 108 061.
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A number is a perfect square (or a square number) if its square root is an integer; that is to say, it is the product of an integer with itself. Here, the square root of 216 122 is about 464.889.
Thus, the square root of 216 122 is not an integer, and therefore 216 122 is not a square number.
The square of a number (here 216 122) is the result of the product of this number (216 122) by itself (i.e., 216 122 × 216 122); the square of 216 122 is sometimes called "raising 216 122 to the power 2", or "216 122 squared".
The square of 216 122 is 46 708 718 884 because 216 122 × 216 122 = 216 1222 = 46 708 718 884.
As a consequence, 216 122 is the square root of 46 708 718 884.
The multiples of 216 122 are all integers evenly divisible by 216 122, that is all numbers such that the remainder of the division by 216 122 is zero. There are infinitely many multiples of 216 122. The smallest multiples of 216 122 are: