22020209972 has 12 divisors (see below), whose sum is σ = 39475254756. Its totient is φ = 10741565760.

The previous prime is 22020209971. The next prime is 22020209993. The reversal of 22020209972 is 27990202022.

It can be written as a sum of positive squares in 2 ways, for example, as 12826468516 + 9193741456 = 113254^2 + 95884^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22020209971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67134623 + ... + 67134950.

It is an arithmetic number, because the mean of its divisors is an integer number (3289604563).

Almost surely, 2^22020209972 is an apocalyptic number.

It is an amenable number.

22020209972 is a deficient number, since it is larger than the sum of its proper divisors (17455044784).

22020209972 is a wasteful number, since it uses less digits than its factorization.

22020209972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134269618 (or 134269616 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The spelling of 22020209972 in words is "twenty-two billion, twenty million, two hundred nine thousand, nine hundred seventy-two".