22022010261 has 36 divisors (see below), whose sum is σ = 33446189868. Its totient is φ = 13961325312.

The previous prime is 22022010259. The next prime is 22022010281. The reversal of 22022010261 is 16201022022.

22022010261 is a `hidden beast` number, since 2 + 202 + 201 + 0 + 261 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 17734248900 + 4287761361 = 133170^2 + 65481^2 .

It is not a de Polignac number, because 22022010261 - 2¹ = 22022010259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22022010251) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 810285 + ... + 837021.

Almost surely, 2^22022010261 is an apocalyptic number.

It is an amenable number.

22022010261 is a deficient number, since it is larger than the sum of its proper divisors (11424179607).

22022010261 is a wasteful number, since it uses less digits than its factorization.

22022010261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26962 (or 26936 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 22022010261 its reverse (16201022022), we get a palindrome (38223032283).

The spelling of 22022010261 in words is "twenty-two billion, twenty-two million, ten thousand, two hundred sixty-one".