222220185 has 32 divisors (see below), whose sum is σ = 401258880. Its totient is φ = 104025600.

The previous prime is 222220177. The next prime is 222220189. The reversal of 222220185 is 581022222.

It is not a de Polignac number, because 222220185 - 2³ = 222220177 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (222220189) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18436 + ... + 28005.

It is an arithmetic number, because the mean of its divisors is an integer number (12539340).

Almost surely, 2^222220185 is an apocalyptic number.

It is an amenable number.

222220185 is a deficient number, since it is larger than the sum of its proper divisors (179038695).

222220185 is a wasteful number, since it uses less digits than its factorization.

222220185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46489.

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 222220185 is about 14907.0515193314. The cubic root of 222220185 is about 605.7050133325.

The spelling of 222220185 in words is "two hundred twenty-two million, two hundred twenty thousand, one hundred eighty-five".