22231302123 has 4 divisors (see below), whose sum is σ = 29641736168. Its totient is φ = 14820868080.

The previous prime is 22231302113. The next prime is 22231302139. The reversal of 22231302123 is 32120313222.

It is a happy number.

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

It is not a de Polignac number, because 22231302123 - 2¹⁸ = 22231039979 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22231302123.

It is not an unprimeable number, because it can be changed into a prime (22231302113) 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, 3705217018 + ... + 3705217023.

It is an arithmetic number, because the mean of its divisors is an integer number (7410434042).

Almost surely, 2^22231302123 is an apocalyptic number.

22231302123 is a deficient number, since it is larger than the sum of its proper divisors (7410434045).

22231302123 is an equidigital number, since it uses as much as digits as its factorization.

22231302123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7410434044.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 22231302123 its reverse (32120313222), we get a palindrome (54351615345).

The spelling of 22231302123 in words is "twenty-two billion, two hundred thirty-one million, three hundred two thousand, one hundred twenty-three".