222171222 has 32 divisors (see below), whose sum is σ = 546884352. Its totient is φ = 58594464.

The previous prime is 222171179. The next prime is 222171223.

222171222 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (21).

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 (222171223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202908 + ... + 203999.

It is an arithmetic number, because the mean of its divisors is an integer number (17090136).

Almost surely, 2^222171222 is an apocalyptic number.

222171222 is an abundant number, since it is smaller than the sum of its proper divisors (324713130).

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

222171222 is a wasteful number, since it uses less digits than its factorization.

222171222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406932.

The product of its digits is 448, while the sum is 21.

The square root of 222171222 is about 14905.4091523849. The cubic root of 222171222 is about 605.6605239551.

The spelling of 222171222 in words is "two hundred twenty-two million, one hundred seventy-one thousand, two hundred twenty-two".