22021539111 has 36 divisors (see below), whose sum is σ = 37653013944. Its totient is φ = 12319734240.

The previous prime is 22021539103. The next prime is 22021539143. The reversal of 22021539111 is 11193512022.

It is not a de Polignac number, because 22021539111 - 2³ = 22021539103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22021539181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 763605 + ... + 791918.

It is an arithmetic number, because the mean of its divisors is an integer number (1045917054).

Almost surely, 2^22021539111 is an apocalyptic number.

22021539111 is a deficient number, since it is larger than the sum of its proper divisors (15631474833).

22021539111 is a wasteful number, since it uses less digits than its factorization.

22021539111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1555564 (or 1555550 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The spelling of 22021539111 in words is "twenty-two billion, twenty-one million, five hundred thirty-nine thousand, one hundred eleven".