21321133320104 has 16 divisors (see below), whose sum is σ = 39977415565920. Its totient is φ = 10660489169200.

The previous prime is 21321133320103. The next prime is 21321133320131. The reversal of 21321133320104 is 40102333112312.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21321133320101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8508572 + ... + 10725579.

It is an arithmetic number, because the mean of its divisors is an integer number (2498588472870).

Almost surely, 2^{21321133320104} is an apocalyptic number.

It is an amenable number.

21321133320104 is a deficient number, since it is larger than the sum of its proper divisors (18656282245816).

21321133320104 is a wasteful number, since it uses less digits than its factorization.

21321133320104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19372720 (or 19372716 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 21321133320104 its reverse (40102333112312), we get a palindrome (61423466432416).

The spelling of 21321133320104 in words is "twenty-one trillion, three hundred twenty-one billion, one hundred thirty-three million, three hundred twenty thousand, one hundred four".