22010690605 has 4 divisors (see below), whose sum is σ = 26412828732. Its totient is φ = 17608552480.

The previous prime is 22010690593. The next prime is 22010690641. The reversal of 22010690605 is 50609601022.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7814206404 + 14196484201 = 88398^2 + 119149^2 .

It is not a de Polignac number, because 22010690605 - 2⁷ = 22010690477 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2201069056 + ... + 2201069065.

It is an arithmetic number, because the mean of its divisors is an integer number (6603207183).

Almost surely, 2^22010690605 is an apocalyptic number.

It is an amenable number.

22010690605 is a deficient number, since it is larger than the sum of its proper divisors (4402138127).

22010690605 is an equidigital number, since it uses as much as digits as its factorization.

22010690605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4402138126.

The product of its (nonzero) digits is 6480, while the sum is 31.

The spelling of 22010690605 in words is "twenty-two billion, ten million, six hundred ninety thousand, six hundred five".