222168135 has 32 divisors (see below), whose sum is σ = 416166912. Its totient is φ = 99083520.

The previous prime is 222168077. The next prime is 222168139. The reversal of 222168135 is 531861222.

It is not a de Polignac number, because 222168135 - 2⁶ = 222168071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222168139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21499 + ... + 30108.

It is an arithmetic number, because the mean of its divisors is an integer number (13005216).

Almost surely, 2^222168135 is an apocalyptic number.

222168135 is a deficient number, since it is larger than the sum of its proper divisors (193998777).

222168135 is a wasteful number, since it uses less digits than its factorization.

222168135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51663.

The product of its digits is 5760, while the sum is 30.

The square root of 222168135 is about 14905.3055990141. The cubic root of 222168135 is about 605.6577187873.

The spelling of 222168135 in words is "two hundred twenty-two million, one hundred sixty-eight thousand, one hundred thirty-five".