21322112044 has 12 divisors (see below), whose sum is σ = 37519850368. Its totient is φ = 10602154800.

The previous prime is 21322111913. The next prime is 21322112051. The reversal of 21322112044 is 44021122312.

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, 14724492 + ... + 14725939.

Almost surely, 2^21322112044 is an apocalyptic number.

It is an amenable number.

21322112044 is a deficient number, since it is larger than the sum of its proper divisors (16197738324).

21322112044 is a wasteful number, since it uses less digits than its factorization.

21322112044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29450616 (or 29450614 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 21322112044 its reverse (44021122312), we get a palindrome (65343234356).

The spelling of 21322112044 in words is "twenty-one billion, three hundred twenty-two million, one hundred twelve thousand, forty-four".