22020199965 has 24 divisors (see below), whose sum is σ = 38251901688. Its totient is φ = 11718397440.

The previous prime is 22020199937. The next prime is 22020199969. The reversal of 22020199965 is 56999102022.

It can be written as a sum of positive squares in 4 ways, for example, as 10101456036 + 11918743929 = 100506^2 + 109173^2 .

It is not a de Polignac number, because 22020199965 - 2⁸ = 22020199709 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 22020199965.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22020199969) 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 23 ways as a sum of consecutive naturals, for example, 514816 + ... + 555945.

It is an arithmetic number, because the mean of its divisors is an integer number (1593829237).

Almost surely, 2^22020199965 is an apocalyptic number.

It is an amenable number.

22020199965 is a deficient number, since it is larger than the sum of its proper divisors (16231701723).

22020199965 is a wasteful number, since it uses less digits than its factorization.

22020199965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1071229 (or 1071226 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

The spelling of 22020199965 in words is "twenty-two billion, twenty million, one hundred ninety-nine thousand, nine hundred sixty-five".