21104200004 has 24 divisors (see below), whose sum is σ = 37839529728. Its totient is φ = 10294351040.

The previous prime is 21104199997. The next prime is 21104200021. The reversal of 21104200004 is 40000240112.

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, 122009 + ... + 238944.

It is an arithmetic number, because the mean of its divisors is an integer number (1576647072).

Almost surely, 2^21104200004 is an apocalyptic number.

It is an amenable number.

21104200004 is a deficient number, since it is larger than the sum of its proper divisors (16735329724).

21104200004 is a wasteful number, since it uses less digits than its factorization.

21104200004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361315 (or 361313 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 21104200004 its reverse (40000240112), we get a palindrome (61104440116).

The spelling of 21104200004 in words is "twenty-one billion, one hundred four million, two hundred thousand, four".