122420642652165 has 96 divisors (see below), whose sum is σ = 244063024007040. Its totient is φ = 51905991836160.

The previous prime is 122420642652137. The next prime is 122420642652197. The reversal of 122420642652165 is 561256246024221.

It is not a de Polignac number, because 122420642652165 - 2²⁷ = 122420508434437 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 136088922 + ... + 136985531.

It is an arithmetic number, because the mean of its divisors is an integer number (2542323166740).

Almost surely, 2^{122420642652165} is an apocalyptic number.

122420642652165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

122420642652165 is a deficient number, since it is larger than the sum of its proper divisors (121642381354875).

122420642652165 is a wasteful number, since it uses less digits than its factorization.

122420642652165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273074515 (or 273074504 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 48.

Adding to 122420642652165 its reverse (561256246024221), we get a palindrome (683676888676386).

The spelling of 122420642652165 in words is "one hundred twenty-two trillion, four hundred twenty billion, six hundred forty-two million, six hundred fifty-two thousand, one hundred sixty-five".