22155242124 has 24 divisors (see below), whose sum is σ = 52318405440. Its totient is φ = 7296103504.

The previous prime is 22155242117. The next prime is 22155242149. The reversal of 22155242124 is 42124255122.

It is a junction number, because it is equal to n+sod(n) for n = 22155242091 and 22155242100.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11121114 + ... + 11123105.

It is an arithmetic number, because the mean of its divisors is an integer number (2179933560).

Almost surely, 2^22155242124 is an apocalyptic number.

It is an amenable number.

22155242124 is an abundant number, since it is smaller than the sum of its proper divisors (30163163316).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22155242124 is a wasteful number, since it uses less digits than its factorization.

22155242124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22244309 (or 22244307 counting only the distinct ones).

The product of its digits is 12800, while the sum is 30.

Adding to 22155242124 its reverse (42124255122), we get a palindrome (64279497246).

The spelling of 22155242124 in words is "twenty-two billion, one hundred fifty-five million, two hundred forty-two thousand, one hundred twenty-four".