122665556612 has 12 divisors (see below), whose sum is σ = 214667407500. Its totient is φ = 61332011616.

The previous prime is 122665556549. The next prime is 122665556623. The reversal of 122665556612 is 216655566221.

It can be written as a sum of positive squares in 2 ways, for example, as 31717472836 + 90948083776 = 178094^2 + 301576^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 320198 + ... + 589794.

It is an arithmetic number, because the mean of its divisors is an integer number (17888950625).

Almost surely, 2^122665556612 is an apocalyptic number.

It is an amenable number.

122665556612 is a deficient number, since it is larger than the sum of its proper divisors (92001850888).

122665556612 is a wasteful number, since it uses less digits than its factorization.

122665556612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383350 (or 383348 counting only the distinct ones).

The product of its digits is 1296000, while the sum is 47.

The spelling of 122665556612 in words is "one hundred twenty-two billion, six hundred sixty-five million, five hundred fifty-six thousand, six hundred twelve".