122017642356 has 24 divisors (see below), whose sum is σ = 284725969920. Its totient is φ = 40669956352.

The previous prime is 122017642339. The next prime is 122017642367. The reversal of 122017642356 is 653246710221.

It is a super-2 number, since 2×122017642356² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122676 + ... + 509003.

It is an arithmetic number, because the mean of its divisors is an integer number (11863582080).

Almost surely, 2^122017642356 is an apocalyptic number.

It is an amenable number.

122017642356 is an abundant number, since it is smaller than the sum of its proper divisors (162708327564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122017642356 is a wasteful number, since it uses less digits than its factorization.

122017642356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647783 (or 647781 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 39.

The spelling of 122017642356 in words is "one hundred twenty-two billion, seventeen million, six hundred forty-two thousand, three hundred fifty-six".