122112517 has 2 divisors, whose sum is σ = 122112518. Its totient is φ = 122112516.

The previous prime is 122112499. The next prime is 122112527. The reversal of 122112517 is 715211221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99082116 + 23030401 = 9954^2 + 4799^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122112517 is a prime.

It is a super-2 number, since 2×122112517² = 29822933616150578, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122112527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61056258 + 61056259.

It is an arithmetic number, because the mean of its divisors is an integer number (61056259).

Almost surely, 2^122112517 is an apocalyptic number.

It is an amenable number.

122112517 is a deficient number, since it is larger than the sum of its proper divisors (1).

122112517 is an equidigital number, since it uses as much as digits as its factorization.

122112517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 280, while the sum is 22.

The square root of 122112517 is about 11050.4532486229. The cubic root of 122112517 is about 496.1199916185.

Adding to 122112517 its reverse (715211221), we get a palindrome (837323738).

The spelling of 122112517 in words is "one hundred twenty-two million, one hundred twelve thousand, five hundred seventeen".