21930192204 has 12 divisors (see below), whose sum is σ = 51170448504. Its totient is φ = 7310064064.

The previous prime is 21930192199. The next prime is 21930192247. The reversal of 21930192204 is 40229103912.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 913757997 + ... + 913758020.

It is an arithmetic number, because the mean of its divisors is an integer number (4264204042).

Almost surely, 2^21930192204 is an apocalyptic number.

It is an amenable number.

21930192204 is an abundant number, since it is smaller than the sum of its proper divisors (29240256300).

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

21930192204 is a wasteful number, since it uses less digits than its factorization.

21930192204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1827516024 (or 1827516022 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The spelling of 21930192204 in words is "twenty-one billion, nine hundred thirty million, one hundred ninety-two thousand, two hundred four".