222722165 has 16 divisors (see below), whose sum is σ = 272999808. Its totient is φ = 174373056.

The previous prime is 222722147. The next prime is 222722167. The reversal of 222722165 is 561227222.

It is a cyclic number.

It is not a de Polignac number, because 222722165 - 2¹⁰ = 222721141 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222722167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137792 + ... + 139398.

It is an arithmetic number, because the mean of its divisors is an integer number (17062488).

Almost surely, 2^222722165 is an apocalyptic number.

It is an amenable number.

222722165 is a deficient number, since it is larger than the sum of its proper divisors (50277643).

222722165 is a wasteful number, since it uses less digits than its factorization.

222722165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2188.

The product of its digits is 6720, while the sum is 29.

The square root of 222722165 is about 14923.8790198795. The cubic root of 222722165 is about 606.1607522287.

Adding to 222722165 its reverse (561227222), we get a palindrome (783949387).

The spelling of 222722165 in words is "two hundred twenty-two million, seven hundred twenty-two thousand, one hundred sixty-five".