22123110121 has 4 divisors (see below), whose sum is σ = 25283554432. Its totient is φ = 18962665812.

The previous prime is 22123110019. The next prime is 22123110127. The reversal of 22123110121 is 12101132122.

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-22123110121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22123110095 and 22123110104.

It is not an unprimeable number, because it can be changed into a prime (22123110127) 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, 1580222145 + ... + 1580222158.

It is an arithmetic number, because the mean of its divisors is an integer number (6320888608).

Almost surely, 2^22123110121 is an apocalyptic number.

It is an amenable number.

22123110121 is a deficient number, since it is larger than the sum of its proper divisors (3160444311).

22123110121 is an equidigital number, since it uses as much as digits as its factorization.

22123110121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3160444310.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 22123110121 its reverse (12101132122), we get a palindrome (34224242243).

The spelling of 22123110121 in words is "twenty-two billion, one hundred twenty-three million, one hundred ten thousand, one hundred twenty-one".