22102020865 has 16 divisors (see below), whose sum is σ = 27620292096. Its totient is φ = 16959801600.

The previous prime is 22102020713. The next prime is 22102020869. The reversal of 22102020865 is 56802020122.

It is not a de Polignac number, because 22102020865 - 2¹⁷ = 22101889793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22102020869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 613431 + ... + 648460.

It is an arithmetic number, because the mean of its divisors is an integer number (1726268256).

Almost surely, 2^22102020865 is an apocalyptic number.

It is an amenable number.

22102020865 is a deficient number, since it is larger than the sum of its proper divisors (5518271231).

22102020865 is a wasteful number, since it uses less digits than its factorization.

22102020865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1262040.

The product of its (nonzero) digits is 3840, while the sum is 28.

Adding to 22102020865 its reverse (56802020122), we get a palindrome (78904040987).

The spelling of 22102020865 in words is "twenty-two billion, one hundred two million, twenty thousand, eight hundred sixty-five".