222884161 has 4 divisors (see below), whose sum is σ = 235995012. Its totient is φ = 209773312.

The previous prime is 222884113. The next prime is 222884173. The reversal of 222884161 is 161488222.

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

It can be written as a sum of positive squares in 2 ways, for example, as 187553025 + 35331136 = 13695^2 + 5944^2 .

It is a cyclic number.

It is not a de Polignac number, because 222884161 - 2²⁵ = 189329729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222884461) 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, 6555400 + ... + 6555433.

It is an arithmetic number, because the mean of its divisors is an integer number (58998753).

Almost surely, 2^222884161 is an apocalyptic number.

It is an amenable number.

222884161 is a deficient number, since it is larger than the sum of its proper divisors (13110851).

222884161 is a wasteful number, since it uses less digits than its factorization.

222884161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13110850.

The product of its digits is 12288, while the sum is 34.

The square root of 222884161 is about 14929.3054426520. The cubic root of 222884161 is about 606.3076794096.

The spelling of 222884161 in words is "two hundred twenty-two million, eight hundred eighty-four thousand, one hundred sixty-one".