21044711204 has 24 divisors (see below), whose sum is σ = 40188824256. Its totient is φ = 9562788000.

The previous prime is 21044711197. The next prime is 21044711209. The reversal of 21044711204 is 40211744012.

It is not an unprimeable number, because it can be changed into a prime (21044711209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70814 + ... + 217034.

It is an arithmetic number, because the mean of its divisors is an integer number (1674534344).

Almost surely, 2^21044711204 is an apocalyptic number.

It is an amenable number.

21044711204 is a deficient number, since it is larger than the sum of its proper divisors (19144113052).

21044711204 is a wasteful number, since it uses less digits than its factorization.

21044711204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149507 (or 149505 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 26.

The spelling of 21044711204 in words is "twenty-one billion, forty-four million, seven hundred eleven thousand, two hundred four".