222636222 has 16 divisors (see below), whose sum is σ = 494747280. Its totient is φ = 74212056.

The previous prime is 222636209. The next prime is 222636223.

222636222 is a `hidden beast` number, since 2 + 2 + 2 + 636 + 2 + 22 = 666.

222636222 is nontrivially palindromic in base 10.

222636222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222636223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2061393 + ... + 2061500.

It is an arithmetic number, because the mean of its divisors is an integer number (30921705).

Almost surely, 2^222636222 is an apocalyptic number.

222636222 is an abundant number, since it is smaller than the sum of its proper divisors (272111058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222636222 is a wasteful number, since it uses less digits than its factorization.

222636222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4122904 (or 4122898 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

The square root of 222636222 is about 14920.9993633134. Note that the first 3 decimals coincide. The cubic root of 222636222 is about 606.0827746945.

The spelling of 222636222 in words is "two hundred twenty-two million, six hundred thirty-six thousand, two hundred twenty-two".