222290 has 8 divisors (see below), whose sum is σ = 400140. Its totient is φ = 88912.

The previous prime is 222289. The next prime is 222293. The reversal of 222290 is 92222.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 214369 + 7921 = 463^2 + 89^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (222293) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11105 + ... + 11124.

2²²²²⁹⁰ is an apocalyptic number.

222290 is a deficient number, since it is larger than the sum of its proper divisors (177850).

222290 is a wasteful number, since it uses less digits than its factorization.

222290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22236.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 222290 is about 471.4764044997. The cubic root of 222290 is about 60.5768438216.

It can be divided in two parts, 222 and 290, that added together give a 9-th power (512 = 2⁹).

The spelling of 222290 in words is "two hundred twenty-two thousand, two hundred ninety".