21130414404 has 36 divisors (see below), whose sum is σ = 54193986672. Its totient is φ = 6403155440.

The previous prime is 21130414399. The next prime is 21130414421. The reversal of 21130414404 is 40441403112.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7274862 + ... + 7277765.

Almost surely, 2^21130414404 is an apocalyptic number.

It is an amenable number.

21130414404 is an abundant number, since it is smaller than the sum of its proper divisors (33063572268).

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

21130414404 is a wasteful number, since it uses less digits than its factorization.

21130414404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14552656 (or 14552643 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 21130414404 its reverse (40441403112), we get a palindrome (61571817516).

It can be divided in two parts, 21130 and 414404, that added together give a palindrome (435534).

The spelling of 21130414404 in words is "twenty-one billion, one hundred thirty million, four hundred fourteen thousand, four hundred four".