21304233104 has 40 divisors (see below), whose sum is σ = 51462176448. Its totient is φ = 8300350080.

The previous prime is 21304233089. The next prime is 21304233127. The reversal of 21304233104 is 40133240312.

It is a self number, because there is not a number n which added to its sum of digits gives 21304233104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8644967 + ... + 8647430.

Almost surely, 2^21304233104 is an apocalyptic number.

It is an amenable number.

21304233104 is an abundant number, since it is smaller than the sum of its proper divisors (30157943344).

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

21304233104 is a wasteful number, since it uses less digits than its factorization.

21304233104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17292423 (or 17292417 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 21304233104 its reverse (40133240312), we get a palindrome (61437473416).

The spelling of 21304233104 in words is "twenty-one billion, three hundred four million, two hundred thirty-three thousand, one hundred four".