21321311300232 has 16 divisors (see below), whose sum is σ = 53303278250640. Its totient is φ = 7107103766736.

The previous prime is 21321311300167. The next prime is 21321311300243. The reversal of 21321311300232 is 23200311312312.

It is a super-2 number, since 2×21321311300232² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 888387970843 = 21321311300232 / (2 + 1 + 3 + 2 + 1 + 3 + 1 + 1 + 3 + 0 + 0 + 2 + 3 + 2).

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 3 ways as a sum of consecutive naturals, for example, 444193985398 + ... + 444193985445.

It is an arithmetic number, because the mean of its divisors is an integer number (3331454890665).

Almost surely, 2^{21321311300232} is an apocalyptic number.

It is an amenable number.

21321311300232 is an abundant number, since it is smaller than the sum of its proper divisors (31981966950408).

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

21321311300232 is a wasteful number, since it uses less digits than its factorization.

21321311300232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 888387970852 (or 888387970848 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 21321311300232 its reverse (23200311312312), we get a palindrome (44521622612544).

The spelling of 21321311300232 in words is "twenty-one trillion, three hundred twenty-one billion, three hundred eleven million, three hundred thousand, two hundred thirty-two".