22108774087 has 4 divisors (see below), whose sum is σ = 22411634080. Its totient is φ = 21805914096.

The previous prime is 22108774073. The next prime is 22108774097. The reversal of 22108774087 is 78047780122.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 22108774087 - 2⁷ = 22108773959 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 (22108774067) 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, 151429887 + ... + 151430032.

It is an arithmetic number, because the mean of its divisors is an integer number (5602908520).

Almost surely, 2^22108774087 is an apocalyptic number.

22108774087 is a deficient number, since it is larger than the sum of its proper divisors (302859993).

22108774087 is an equidigital number, since it uses as much as digits as its factorization.

22108774087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302859992.

The product of its (nonzero) digits is 351232, while the sum is 46.

The spelling of 22108774087 in words is "twenty-two billion, one hundred eight million, seven hundred seventy-four thousand, eighty-seven".