22231312109 has 4 divisors (see below), whose sum is σ = 22237840704. Its totient is φ = 22224783516.

The previous prime is 22231312099. The next prime is 22231312123. The reversal of 22231312109 is 90121313222.

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 a de Polignac number, because none of the positive numbers 2^k-22231312109 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 (22231312189) 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, 3259187 + ... + 3266000.

It is an arithmetic number, because the mean of its divisors is an integer number (5559460176).

Almost surely, 2^22231312109 is an apocalyptic number.

It is an amenable number.

22231312109 is a deficient number, since it is larger than the sum of its proper divisors (6528595).

22231312109 is an equidigital number, since it uses as much as digits as its factorization.

22231312109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6528594.

The product of its (nonzero) digits is 1296, while the sum is 26.

The spelling of 22231312109 in words is "twenty-two billion, two hundred thirty-one million, three hundred twelve thousand, one hundred nine".