22112012232 has 64 divisors (see below), whose sum is σ = 62287401600. Its totient is φ = 7266853440.

The previous prime is 22112012201. The next prime is 22112012239. The reversal of 22112012232 is 23221021122.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (22112012239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 705583 + ... + 736254.

It is an arithmetic number, because the mean of its divisors is an integer number (973240650).

Almost surely, 2^22112012232 is an apocalyptic number.

It is an amenable number.

22112012232 is an abundant number, since it is smaller than the sum of its proper divisors (40175389368).

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

22112012232 is a wasteful number, since it uses less digits than its factorization.

22112012232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1441923 (or 1441913 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 22112012232 its reverse (23221021122), we get a palindrome (45333033354).

The spelling of 22112012232 in words is "twenty-two billion, one hundred twelve million, twelve thousand, two hundred thirty-two".