22221112222 has 24 divisors (see below), whose sum is σ = 35109796176. Its totient is φ = 10527916608.

The previous prime is 22221112157. The next prime is 22221112231.

22221112222 is nontrivially palindromic in base 10.

It is a nude number because it is divisible by every one of its digits.

It is a zygodrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 22221112222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 505558 + ... + 547750.

It is an arithmetic number, because the mean of its divisors is an integer number (1462908174).

Almost surely, 2^22221112222 is an apocalyptic number.

22221112222 is a deficient number, since it is larger than the sum of its proper divisors (12888683954).

22221112222 is a wasteful number, since it uses less digits than its factorization.

22221112222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42432 (or 42325 counting only the distinct ones).

The product of its digits is 256, while the sum is 19.

The spelling of 22221112222 in words is "twenty-two billion, two hundred twenty-one million, one hundred twelve thousand, two hundred twenty-two".