222285 has 32 divisors (see below), whose sum is σ = 426240. Its totient is φ = 96768.

The previous prime is 222269. The next prime is 222289. The reversal of 222285 is 582222.

222285 = 15² + 16² + ... + 87².

222285 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 222285 - 2⁴ = 222269 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222289) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3009 + ... + 3081.

It is an arithmetic number, because the mean of its divisors is an integer number (13320).

2²²²²⁸⁵ is an apocalyptic number.

It is an amenable number.

222285 is a deficient number, since it is larger than the sum of its proper divisors (203955).

222285 is a wasteful number, since it uses less digits than its factorization.

222285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117.

The product of its digits is 640, while the sum is 21.

The square root of 222285 is about 471.4711019776. The cubic root of 222285 is about 60.5763896304.

222285 divided by its sum of digits (21) gives a triangular number (10585 = T₁₄₅).

The spelling of 222285 in words is "two hundred twenty-two thousand, two hundred eighty-five".