222165651 has 16 divisors (see below), whose sum is σ = 314202240. Its totient is φ = 139239360.

The previous prime is 222165641. The next prime is 222165659. The reversal of 222165651 is 156561222.

It is not a de Polignac number, because 222165651 - 2¹⁰ = 222164627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222165659) 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, 7410 + ... + 22343.

It is an arithmetic number, because the mean of its divisors is an integer number (19637640).

Almost surely, 2^222165651 is an apocalyptic number.

222165651 is a deficient number, since it is larger than the sum of its proper divisors (92036589).

222165651 is a wasteful number, since it uses less digits than its factorization.

222165651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29906.

The product of its digits is 7200, while the sum is 30.

The square root of 222165651 is about 14905.2222727472. Note that the first 4 decimals coincide. The cubic root of 222165651 is about 605.6554615488.

The spelling of 222165651 in words is "two hundred twenty-two million, one hundred sixty-five thousand, six hundred fifty-one".