It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 122 338 518 is not a prime number.
For example, 122 338 518 can be divided by 2: 122 338 518 / 2 = 61 169 259.
For 122 338 518 to be a prime number, it would have been required that 122 338 518 has only two divisors, i.e., itself and 1.
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122 338 518 is an even number, because it is evenly divisible by 2: 122 338 518 / 2 = 61 169 259.
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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 122 338 518 is about 11 060.674.
Thus, the square root of 122 338 518 is not an integer, and therefore 122 338 518 is not a square number.
The square of a number (here 122 338 518) is the result of the product of this number (122 338 518) by itself (i.e., 122 338 518 × 122 338 518); the square of 122 338 518 is sometimes called "raising 122 338 518 to the power 2", or "122 338 518 squared".
The square of 122 338 518 is 14 966 712 986 436 324 because 122 338 518 × 122 338 518 = 122 338 5182 = 14 966 712 986 436 324.
As a consequence, 122 338 518 is the square root of 14 966 712 986 436 324.
122 338 518 is a number with 9 digits.
The multiples of 122 338 518 are all integers evenly divisible by 122 338 518, that is all numbers such that the remainder of the division by 122 338 518 is zero. There are infinitely many multiples of 122 338 518. The smallest multiples of 122 338 518 are: