222768161 has 12 divisors (see below), whose sum is σ = 282697200. Its totient is φ = 173585160.

The previous prime is 222768149. The next prime is 222768167. The reversal of 222768161 is 161867222.

It is not a de Polignac number, because 222768161 - 2⁶ = 222768097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222768167) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 206111 + ... + 207188.

It is an arithmetic number, because the mean of its divisors is an integer number (23558100).

Almost surely, 2^222768161 is an apocalyptic number.

It is an amenable number.

222768161 is a deficient number, since it is larger than the sum of its proper divisors (59929039).

222768161 is a wasteful number, since it uses less digits than its factorization.

222768161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413324 (or 413317 counting only the distinct ones).

The product of its digits is 16128, while the sum is 35.

The square root of 222768161 is about 14925.4199605907. The cubic root of 222768161 is about 606.2024769352.

The spelling of 222768161 in words is "two hundred twenty-two million, seven hundred sixty-eight thousand, one hundred sixty-one".