22102542261 has 6 divisors (see below), whose sum is σ = 31925894390. Its totient is φ = 14735028168.

The previous prime is 22102542211. The next prime is 22102542269. The reversal of 22102542261 is 16224520122.

22102542261 is a `hidden beast` number, since 2 + 210 + 25 + 422 + 6 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 20325919761 + 1776622500 = 142569^2 + 42150^2 .

It is not a de Polignac number, because 22102542261 - 2¹⁸ = 22102280117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22102542269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1227919006 + ... + 1227919023.

Almost surely, 2^22102542261 is an apocalyptic number.

It is an amenable number.

22102542261 is a deficient number, since it is larger than the sum of its proper divisors (9823352129).

22102542261 is a wasteful number, since it uses less digits than its factorization.

22102542261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2455838035 (or 2455838032 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The spelling of 22102542261 in words is "twenty-two billion, one hundred two million, five hundred forty-two thousand, two hundred sixty-one".