22021869920 has 48 divisors (see below), whose sum is σ = 52121987568. Its totient is φ = 8792609280.

The previous prime is 22021869907. The next prime is 22021869943. The reversal of 22021869920 is 2996812022.

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, 38291 + ... + 213330.

It is an arithmetic number, because the mean of its divisors is an integer number (1085874741).

Almost surely, 2^22021869920 is an apocalyptic number.

22021869920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22021869920 is an abundant number, since it is smaller than the sum of its proper divisors (30100117648).

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

22021869920 is a wasteful number, since it uses less digits than its factorization.

22021869920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252183 (or 252175 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 41.

The spelling of 22021869920 in words is "twenty-two billion, twenty-one million, eight hundred sixty-nine thousand, nine hundred twenty".