121572785322 has 48 divisors (see below), whose sum is σ = 264058939872. Its totient is φ = 40424171040.

The previous prime is 121572785317. The next prime is 121572785339. The reversal of 121572785322 is 223587275121.

It is a happy number.

121572785322 is a `hidden beast` number, since 1 + 2 + 1 + 57 + 278 + 5 + 322 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22073293 + ... + 22078799.

It is an arithmetic number, because the mean of its divisors is an integer number (5501227914).

Almost surely, 2^121572785322 is an apocalyptic number.

121572785322 is an abundant number, since it is smaller than the sum of its proper divisors (142486154550).

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

121572785322 is a wasteful number, since it uses less digits than its factorization.

121572785322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8323 (or 8320 counting only the distinct ones).

The product of its digits is 470400, while the sum is 45.

The spelling of 121572785322 in words is "one hundred twenty-one billion, five hundred seventy-two million, seven hundred eighty-five thousand, three hundred twenty-two".