21200403304 has 32 divisors (see below), whose sum is σ = 39982360320. Its totient is φ = 10538611776.

The previous prime is 21200403251. The next prime is 21200403311. The reversal of 21200403304 is 40330400212.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1015677 + ... + 1036339.

It is an arithmetic number, because the mean of its divisors is an integer number (1249448760).

Almost surely, 2^21200403304 is an apocalyptic number.

It is an amenable number.

21200403304 is a deficient number, since it is larger than the sum of its proper divisors (18781957016).

21200403304 is a wasteful number, since it uses less digits than its factorization.

21200403304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21409 (or 21405 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 21200403304 its reverse (40330400212), we get a palindrome (61530803516).

The spelling of 21200403304 in words is "twenty-one billion, two hundred million, four hundred three thousand, three hundred four".