22123454188 has 12 divisors (see below), whose sum is σ = 42235685352. Its totient is φ = 10056115520.

The previous prime is 22123454147. The next prime is 22123454189. The reversal of 22123454188 is 88145432122.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 22123454188.

It is not an unprimeable number, because it can be changed into a prime (22123454189) 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, 251402845 + ... + 251402932.

It is an arithmetic number, because the mean of its divisors is an integer number (3519640446).

Almost surely, 2^22123454188 is an apocalyptic number.

It is an amenable number.

22123454188 is a deficient number, since it is larger than the sum of its proper divisors (20112231164).

22123454188 is a wasteful number, since it uses less digits than its factorization.

22123454188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502805792 (or 502805790 counting only the distinct ones).

The product of its digits is 122880, while the sum is 40.

The spelling of 22123454188 in words is "twenty-two billion, one hundred twenty-three million, four hundred fifty-four thousand, one hundred eighty-eight".