21304112204 has 24 divisors (see below), whose sum is σ = 39288358368. Its totient is φ = 10088038400.

The previous prime is 21304112189. The next prime is 21304112243. The reversal of 21304112204 is 40221140312.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1137077 + ... + 1155660.

It is an arithmetic number, because the mean of its divisors is an integer number (1637014932).

Almost surely, 2^21304112204 is an apocalyptic number.

It is an amenable number.

21304112204 is a deficient number, since it is larger than the sum of its proper divisors (17984246164).

21304112204 is a wasteful number, since it uses less digits than its factorization.

21304112204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2292865 (or 2292863 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21304112204 its reverse (40221140312), we get a palindrome (61525252516).

The spelling of 21304112204 in words is "twenty-one billion, three hundred four million, one hundred twelve thousand, two hundred four".