122315578428 has 48 divisors (see below), whose sum is σ = 293226164000. Its totient is φ = 39655090944.

The previous prime is 122315578409. The next prime is 122315578433. The reversal of 122315578428 is 824875513221.

It is a super-2 number, since 2×122315578428² (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 15 ways as a sum of consecutive naturals, for example, 1170450 + ... + 1270662.

Almost surely, 2^122315578428 is an apocalyptic number.

It is an amenable number.

122315578428 is an abundant number, since it is smaller than the sum of its proper divisors (170910585572).

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

122315578428 is a wasteful number, since it uses less digits than its factorization.

122315578428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103006 (or 103004 counting only the distinct ones).

The product of its digits is 1075200, while the sum is 48.

The spelling of 122315578428 in words is "one hundred twenty-two billion, three hundred fifteen million, five hundred seventy-eight thousand, four hundred twenty-eight".