222516211 has 4 divisors (see below), whose sum is σ = 222550632. Its totient is φ = 222481792.

The previous prime is 222516193. The next prime is 222516221. The reversal of 222516211 is 112615222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 222516211 - 2²⁵ = 188961779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222516221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4270 + ... + 21523.

It is an arithmetic number, because the mean of its divisors is an integer number (55637658).

Almost surely, 2^222516211 is an apocalyptic number.

222516211 is a deficient number, since it is larger than the sum of its proper divisors (34421).

222516211 is an equidigital number, since it uses as much as digits as its factorization.

222516211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34420.

The product of its digits is 480, while the sum is 22.

The square root of 222516211 is about 14916.9772742335. The cubic root of 222516211 is about 605.9738531055.

The spelling of 222516211 in words is "two hundred twenty-two million, five hundred sixteen thousand, two hundred eleven".