222201166 has 16 divisors (see below), whose sum is σ = 366823728. Its totient is φ = 100105600.

The previous prime is 222201163. The next prime is 222201173. The reversal of 222201166 is 661102222.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222201163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42205 + ... + 47176.

It is an arithmetic number, because the mean of its divisors is an integer number (22926483).

Almost surely, 2^222201166 is an apocalyptic number.

222201166 is a deficient number, since it is larger than the sum of its proper divisors (144622562).

222201166 is a wasteful number, since it uses less digits than its factorization.

222201166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89507.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 222201166 is about 14906.4135861045. The cubic root of 222201166 is about 605.6877328256.

Adding to 222201166 its reverse (661102222), we get a palindrome (883303388).

The spelling of 222201166 in words is "two hundred twenty-two million, two hundred one thousand, one hundred sixty-six".