22111111232 has 42 divisors (see below), whose sum is σ = 51040292382. Its totient is φ = 9476189184.

The previous prime is 22111111159. The next prime is 22111111247. The reversal of 22111111232 is 23211111122.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 21183055936 + 928055296 = 145544^2 + 30464^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22111111232.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3522233 + ... + 3528504.

Almost surely, 2^22111111232 is an apocalyptic number.

It is an amenable number.

22111111232 is an abundant number, since it is smaller than the sum of its proper divisors (28929181150).

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

22111111232 is an equidigital number, since it uses as much as digits as its factorization.

22111111232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7050763 (or 7050746 counting only the distinct ones).

The product of its digits is 48, while the sum is 17.

Adding to 22111111232 its reverse (23211111122), we get a palindrome (45322222354).

The spelling of 22111111232 in words is "twenty-two billion, one hundred eleven million, one hundred eleven thousand, two hundred thirty-two".