222165 has 12 divisors (see below), whose sum is σ = 385164. Its totient is φ = 118464.

The previous prime is 222163. The next prime is 222193. The reversal of 222165 is 561222.

It can be written as a sum of positive squares in 2 ways, for example, as 88209 + 133956 = 297^2 + 366^2 .

It is not a de Polignac number, because 222165 - 2¹ = 222163 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2424 + ... + 2513.

It is an arithmetic number, because the mean of its divisors is an integer number (32097).

2²²²¹⁶⁵ is an apocalyptic number.

It is an amenable number.

222165 is a deficient number, since it is larger than the sum of its proper divisors (162999).

222165 is a wasteful number, since it uses less digits than its factorization.

222165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4948 (or 4945 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 222165 is about 471.3438235513. The cubic root of 222165 is about 60.5654869975.

Adding to 222165 its reverse (561222), we get a palindrome (783387).

It can be divided in two parts, 22 and 2165, that added together give a 7-th power (2187 = 3⁷).

The spelling of 222165 in words is "two hundred twenty-two thousand, one hundred sixty-five".