21130202404 has 12 divisors (see below), whose sum is σ = 38924057200. Its totient is φ = 10009043208.

The previous prime is 21130202383. The next prime is 21130202413. The reversal of 21130202404 is 40420203112.

It is a Harshad number since it is a multiple of its sum of digits (19).

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, 139014414 + ... + 139014565.

Almost surely, 2^21130202404 is an apocalyptic number.

It is an amenable number.

21130202404 is a deficient number, since it is larger than the sum of its proper divisors (17793854796).

21130202404 is a wasteful number, since it uses less digits than its factorization.

21130202404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278029002 (or 278029000 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 21130202404 its reverse (40420203112), we get a palindrome (61550405516).

The spelling of 21130202404 in words is "twenty-one billion, one hundred thirty million, two hundred two thousand, four hundred four".