222142165 has 32 divisors (see below), whose sum is σ = 320993280. Its totient is φ = 144285504.

The previous prime is 222142159. The next prime is 222142169. The reversal of 222142165 is 561241222.

It is a cyclic number.

It is not a de Polignac number, because 222142165 - 2³ = 222142157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222142169) 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, 84846 + ... + 87424.

It is an arithmetic number, because the mean of its divisors is an integer number (10031040).

Almost surely, 2^222142165 is an apocalyptic number.

It is an amenable number.

222142165 is a deficient number, since it is larger than the sum of its proper divisors (98851115).

222142165 is a wasteful number, since it uses less digits than its factorization.

222142165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2721.

The product of its digits is 1920, while the sum is 25.

The square root of 222142165 is about 14904.4344072494. The cubic root of 222142165 is about 605.6341187274.

Adding to 222142165 its reverse (561241222), we get a palindrome (783383387).

The spelling of 222142165 in words is "two hundred twenty-two million, one hundred forty-two thousand, one hundred sixty-five".