21140900104 has 16 divisors (see below), whose sum is σ = 39640752720. Its totient is φ = 10570032720.

The previous prime is 21140900101. The next prime is 21140900129. The reversal of 21140900104 is 40100904112.

It is not an unprimeable number, because it can be changed into a prime (21140900101) 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, 315807 + ... + 376849.

It is an arithmetic number, because the mean of its divisors is an integer number (2477547045).

Almost surely, 2^21140900104 is an apocalyptic number.

It is an amenable number.

21140900104 is a deficient number, since it is larger than the sum of its proper divisors (18499852616).

21140900104 is a wasteful number, since it uses less digits than its factorization.

21140900104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104340 (or 104336 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 21140900104 in words is "twenty-one billion, one hundred forty million, nine hundred thousand, one hundred four".