22242655581 has 4 divisors (see below), whose sum is σ = 29656874112. Its totient is φ = 14828437052.

The previous prime is 22242655573. The next prime is 22242655583. The reversal of 22242655581 is 18555624222.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22242655581 - 2³ = 22242655573 is a prime.

It is a super-2 number, since 2×22242655581² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22242655583) 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, 3707109261 + ... + 3707109266.

It is an arithmetic number, because the mean of its divisors is an integer number (7414218528).

Almost surely, 2^22242655581 is an apocalyptic number.

It is an amenable number.

22242655581 is a deficient number, since it is larger than the sum of its proper divisors (7414218531).

22242655581 is an equidigital number, since it uses as much as digits as its factorization.

22242655581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7414218530.

The product of its digits is 384000, while the sum is 42.

The spelling of 22242655581 in words is "twenty-two billion, two hundred forty-two million, six hundred fifty-five thousand, five hundred eighty-one".