21323400104 has 64 divisors (see below), whose sum is σ = 42444864000. Its totient is φ = 10014693120.

The previous prime is 21323400023. The next prime is 21323400139. The reversal of 21323400104 is 40100432312.

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 15 ways as a sum of consecutive naturals, for example, 12121577 + ... + 12123335.

It is an arithmetic number, because the mean of its divisors is an integer number (663201000).

Almost surely, 2^21323400104 is an apocalyptic number.

It is an amenable number.

21323400104 is a deficient number, since it is larger than the sum of its proper divisors (21121463896).

21323400104 is a wasteful number, since it uses less digits than its factorization.

21323400104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2418 (or 2414 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 21323400104 its reverse (40100432312), we get a palindrome (61423832416).

The spelling of 21323400104 in words is "twenty-one billion, three hundred twenty-three million, four hundred thousand, one hundred four".