22121037123 has 4 divisors (see below), whose sum is σ = 29494716168. Its totient is φ = 14747358080.

The previous prime is 22121037119. The next prime is 22121037137. The reversal of 22121037123 is 32173012122.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 22121037123 - 2² = 22121037119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22121037093 and 22121037102.

It is not an unprimeable number, because it can be changed into a prime (22121037173) 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, 3686839518 + ... + 3686839523.

It is an arithmetic number, because the mean of its divisors is an integer number (7373679042).

Almost surely, 2^22121037123 is an apocalyptic number.

22121037123 is a deficient number, since it is larger than the sum of its proper divisors (7373679045).

22121037123 is an equidigital number, since it uses as much as digits as its factorization.

22121037123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7373679044.

The product of its (nonzero) digits is 1008, while the sum is 24.

Adding to 22121037123 its reverse (32173012122), we get a palindrome (54294049245).

The spelling of 22121037123 in words is "twenty-two billion, one hundred twenty-one million, thirty-seven thousand, one hundred twenty-three".