21034512204 has 48 divisors (see below), whose sum is σ = 50052038400. Its totient is φ = 6873382336.

The previous prime is 21034512179. The next prime is 21034512223. The reversal of 21034512204 is 40221543012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212794 + ... + 295550.

It is an arithmetic number, because the mean of its divisors is an integer number (1042750800).

Almost surely, 2^21034512204 is an apocalyptic number.

It is an amenable number.

21034512204 is an abundant number, since it is smaller than the sum of its proper divisors (29017526196).

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

21034512204 is a wasteful number, since it uses less digits than its factorization.

21034512204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83182 (or 83180 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The spelling of 21034512204 in words is "twenty-one billion, thirty-four million, five hundred twelve thousand, two hundred four".