2222222188 has 24 divisors (see below), whose sum is σ = 4059724032. Its totient is φ = 1062342864.

The previous prime is 2222222137. The next prime is 2222222243. The reversal of 2222222188 is 8812222222.

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, 315481 + ... + 322447.

It is an arithmetic number, because the mean of its divisors is an integer number (169155168).

Almost surely, 2^2222222188 is an apocalyptic number.

It is an amenable number.

2222222188 is a deficient number, since it is larger than the sum of its proper divisors (1837501844).

2222222188 is a wasteful number, since it uses less digits than its factorization.

2222222188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10461 (or 10459 counting only the distinct ones).

The product of its digits is 8192, while the sum is 31.

The square root of 2222222188 is about 47140.4517161217. The cubic root of 2222222188 is about 1304.9558736908.

The spelling of 2222222188 in words is "two billion, two hundred twenty-two million, two hundred twenty-two thousand, one hundred eighty-eight".