22146221524 has 24 divisors (see below), whose sum is σ = 44615753280. Its totient is φ = 9421957056.

The previous prime is 22146221507. The next prime is 22146221527. The reversal of 22146221524 is 42512264122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22146221527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2882794 + ... + 2890465.

It is an arithmetic number, because the mean of its divisors is an integer number (1858989720).

Almost surely, 2^22146221524 is an apocalyptic number.

It is an amenable number.

22146221524 is an abundant number, since it is smaller than the sum of its proper divisors (22469531756).

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

22146221524 is a wasteful number, since it uses less digits than its factorization.

22146221524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5773407 (or 5773405 counting only the distinct ones).

The product of its digits is 15360, while the sum is 31.

Adding to 22146221524 its reverse (42512264122), we get a palindrome (64658485646).

The spelling of 22146221524 in words is "twenty-two billion, one hundred forty-six million, two hundred twenty-one thousand, five hundred twenty-four".