222166 has 12 divisors (see below), whose sum is σ = 387828. Its totient is φ = 95172.

The previous prime is 222163. The next prime is 222193. The reversal of 222166 is 661222.

222166 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 5 ways as a sum of consecutive naturals, for example, 1036 + ... + 1231.

It is an arithmetic number, because the mean of its divisors is an integer number (32319).

2²²²¹⁶⁶ is an apocalyptic number.

222166 is a deficient number, since it is larger than the sum of its proper divisors (165662).

222166 is a wasteful number, since it uses less digits than its factorization.

222166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2283 (or 2276 counting only the distinct ones).

The product of its digits is 288, while the sum is 19.

The square root of 222166 is about 471.3448843469. The cubic root of 222166 is about 60.5655778690.

Adding to 222166 its reverse (661222), we get a palindrome (883388).

It can be divided in two parts, 22216 and 6, that added together give a palindrome (22222).

The spelling of 222166 in words is "two hundred twenty-two thousand, one hundred sixty-six".