2121321331112 has 16 divisors (see below), whose sum is σ = 3977904816000. Its totient is φ = 1060546713520.

The previous prime is 2121321331061. The next prime is 2121321331127. The reversal of 2121321331112 is 2111331231212.

It is a happy number.

It is an unprimeable number.

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, 14164862 + ... + 14313837.

It is an arithmetic number, because the mean of its divisors is an integer number (248619051000).

Almost surely, 2^{2121321331112} is an apocalyptic number.

It is an amenable number.

2121321331112 is a deficient number, since it is larger than the sum of its proper divisors (1856583484888).

2121321331112 is a wasteful number, since it uses less digits than its factorization.

2121321331112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28488016 (or 28488012 counting only the distinct ones).

The product of its digits is 432, while the sum is 23.

Adding to 2121321331112 its reverse (2111331231212), we get a palindrome (4232652562324).

The spelling of 2121321331112 in words is "two trillion, one hundred twenty-one billion, three hundred twenty-one million, three hundred thirty-one thousand, one hundred twelve".