222165329 has 4 divisors (see below), whose sum is σ = 222866484. Its totient is φ = 221464176.

The previous prime is 222165323. The next prime is 222165331. The reversal of 222165329 is 923561222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 923561222 = 2 ⋅461780611.

It can be written as a sum of positive squares in 2 ways, for example, as 53684929 + 168480400 = 7327^2 + 12980^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222165329 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222165295 and 222165304.

It is not an unprimeable number, because it can be changed into a prime (222165323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 350102 + ... + 350735.

It is an arithmetic number, because the mean of its divisors is an integer number (55716621).

Almost surely, 2^222165329 is an apocalyptic number.

It is an amenable number.

222165329 is a deficient number, since it is larger than the sum of its proper divisors (701155).

222165329 is an equidigital number, since it uses as much as digits as its factorization.

222165329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701154.

The product of its digits is 12960, while the sum is 32.

The square root of 222165329 is about 14905.2114711600. The cubic root of 222165329 is about 605.6551689426.

The spelling of 222165329 in words is "two hundred twenty-two million, one hundred sixty-five thousand, three hundred twenty-nine".