21200331323112 has 16 divisors (see below), whose sum is σ = 53000828307840. Its totient is φ = 7066777107696.

The previous prime is 21200331323099. The next prime is 21200331323153. The reversal of 21200331323112 is 21132313300212.

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: 883347138463 = 21200331323112 / (2 + 1 + 2 + 0 + 0 + 3 + 3 + 1 + 3 + 2 + 3 + 1 + 1 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 441673569208 + ... + 441673569255.

It is an arithmetic number, because the mean of its divisors is an integer number (3312551769240).

Almost surely, 2^{21200331323112} is an apocalyptic number.

It is an amenable number.

21200331323112 is an abundant number, since it is smaller than the sum of its proper divisors (31800496984728).

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

21200331323112 is a wasteful number, since it uses less digits than its factorization.

21200331323112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883347138472 (or 883347138468 counting only the distinct ones).

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

Adding to 21200331323112 its reverse (21132313300212), we get a palindrome (42332644623324).

The spelling of 21200331323112 in words is "twenty-one trillion, two hundred billion, three hundred thirty-one million, three hundred twenty-three thousand, one hundred twelve".