21120044332 has 12 divisors (see below), whose sum is σ = 36961212456. Its totient is φ = 10559697920.

The previous prime is 21120044329. The next prime is 21120044347. The reversal of 21120044332 is 23344002112.

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, 122028 + ... + 239020.

It is an arithmetic number, because the mean of its divisors is an integer number (3080101038).

Almost surely, 2^21120044332 is an apocalyptic number.

It is an amenable number.

21120044332 is a deficient number, since it is larger than the sum of its proper divisors (15841168124).

21120044332 is a wasteful number, since it uses less digits than its factorization.

21120044332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162128 (or 162126 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 21120044332 its reverse (23344002112), we get a palindrome (44464046444).

The spelling of 21120044332 in words is "twenty-one billion, one hundred twenty million, forty-four thousand, three hundred thirty-two".