222222290 has 16 divisors (see below), whose sum is σ = 421053120. Its totient is φ = 84210480.

The previous prime is 222222281. The next prime is 222222367. The reversal of 222222290 is 92222222.

It is a happy number.

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, 584606 + ... + 584985.

It is an arithmetic number, because the mean of its divisors is an integer number (26315820).

Almost surely, 2^222222290 is an apocalyptic number.

222222290 is a deficient number, since it is larger than the sum of its proper divisors (198830830).

222222290 is a wasteful number, since it uses less digits than its factorization.

222222290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1169617.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 222222290 is about 14907.1221233342. The cubic root of 222222290 is about 605.7069258576.

The spelling of 222222290 in words is "two hundred twenty-two million, two hundred twenty-two thousand, two hundred ninety".