22222165 has 16 divisors (see below), whose sum is σ = 30621312. Its totient is φ = 15165504.

The previous prime is 22222129. The next prime is 22222199. The reversal of 22222165 is 56122222.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 22222165 - 2¹¹ = 22220117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6547 + ... + 9343.

It is an arithmetic number, because the mean of its divisors is an integer number (1913832).

Almost surely, 2^22222165 is an apocalyptic number.

It is an amenable number.

22222165 is a deficient number, since it is larger than the sum of its proper divisors (8399147).

22222165 is a wasteful number, since it uses less digits than its factorization.

22222165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3036.

The product of its digits is 960, while the sum is 22.

The square root of 22222165 is about 4714.0391385732. The cubic root of 22222165 is about 281.1439804516.

Adding to 22222165 its reverse (56122222), we get a palindrome (78344387).

The spelling of 22222165 in words is "twenty-two million, two hundred twenty-two thousand, one hundred sixty-five".