22123122125 has 64 divisors (see below), whose sum is σ = 32852252160. Its totient is φ = 14707123200.

The previous prime is 22123122121. The next prime is 22123122173. The reversal of 22123122125 is 52122132122.

It is not a de Polignac number, because 22123122125 - 2² = 22123122121 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a self number, because there is not a number n which added to its sum of digits gives 22123122125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22123122121) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 617966 + ... + 652784.

It is an arithmetic number, because the mean of its divisors is an integer number (513316440).

Almost surely, 2^22123122125 is an apocalyptic number.

22123122125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22123122125 is a deficient number, since it is larger than the sum of its proper divisors (10729130035).

22123122125 is a wasteful number, since it uses less digits than its factorization.

22123122125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34887 (or 34877 counting only the distinct ones).

The product of its digits is 960, while the sum is 23.

Adding to 22123122125 its reverse (52122132122), we get a palindrome (74245254247).

The spelling of 22123122125 in words is "twenty-two billion, one hundred twenty-three million, one hundred twenty-two thousand, one hundred twenty-five".