21930038204 has 12 divisors (see below), whose sum is σ = 38622011064. Its totient is φ = 10895177904.

The previous prime is 21930038153. The next prime is 21930038209. The reversal of 21930038204 is 40283003912.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21930038209) 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, 17459594 + ... + 17460849.

It is an arithmetic number, because the mean of its divisors is an integer number (3218500922).

Almost surely, 2^21930038204 is an apocalyptic number.

It is an amenable number.

21930038204 is a deficient number, since it is larger than the sum of its proper divisors (16691972860).

21930038204 is a wasteful number, since it uses less digits than its factorization.

21930038204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34920604 (or 34920602 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The spelling of 21930038204 in words is "twenty-one billion, nine hundred thirty million, thirty-eight thousand, two hundred four".