922021123021 has 4 divisors (see below), whose sum is σ = 924150502492. Its totient is φ = 919891743552.

The previous prime is 922021123003. The next prime is 922021123027. The reversal of 922021123021 is 120321120229.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 197375832900 + 724645290121 = 444270^2 + 851261^2 .

It is a cyclic number.

It is not a de Polignac number, because 922021123021 - 2⁵ = 922021122989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (922021123027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1064689086 + ... + 1064689951.

It is an arithmetic number, because the mean of its divisors is an integer number (231037625623).

Almost surely, 2^922021123021 is an apocalyptic number.

It is an amenable number.

922021123021 is a deficient number, since it is larger than the sum of its proper divisors (2129379471).

922021123021 is a wasteful number, since it uses less digits than its factorization.

922021123021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2129379470.

The product of its (nonzero) digits is 864, while the sum is 25.

The spelling of 922021123021 in words is "nine hundred twenty-two billion, twenty-one million, one hundred twenty-three thousand, twenty-one".