122665611257 has 24 divisors (see below), whose sum is σ = 151564799232. Its totient is φ = 97178616000.

The previous prime is 122665611251. The next prime is 122665611259. The reversal of 122665611257 is 752116566221.

It is not a de Polignac number, because 122665611257 - 2⁴ = 122665611241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (122665611251) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 488369 + ... + 695582.

It is an arithmetic number, because the mean of its divisors is an integer number (6315199968).

Almost surely, 2^122665611257 is an apocalyptic number.

It is an amenable number.

122665611257 is a deficient number, since it is larger than the sum of its proper divisors (28899187975).

122665611257 is a wasteful number, since it uses less digits than its factorization.

122665611257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1184037 (or 1184018 counting only the distinct ones).

The product of its digits is 302400, while the sum is 44.

The spelling of 122665611257 in words is "one hundred twenty-two billion, six hundred sixty-five million, six hundred eleven thousand, two hundred fifty-seven".