222111222 has 64 divisors (see below), whose sum is σ = 487062720. Its totient is φ = 67239936.

The previous prime is 222111209. The next prime is 222111233.

222111222 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 congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 864118 + ... + 864374.

It is an arithmetic number, because the mean of its divisors is an integer number (7610355).

Almost surely, 2^222111222 is an apocalyptic number.

222111222 is an abundant number, since it is smaller than the sum of its proper divisors (264951498).

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

222111222 is a wasteful number, since it uses less digits than its factorization.

222111222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545.

The product of its digits is 64, while the sum is 15.

The square root of 222111222 is about 14903.3963243282. The cubic root of 222111222 is about 605.6059970863.

The spelling of 222111222 in words is "two hundred twenty-two million, one hundred eleven thousand, two hundred twenty-two".