222111072 has 60 divisors (see below), whose sum is σ = 653230116. Its totient is φ = 74036160.

The previous prime is 222111053. The next prime is 222111077. The reversal of 222111072 is 270111222.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222111077) 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 9 ways as a sum of consecutive naturals, for example, 40254 + ... + 45437.

Almost surely, 2^222111072 is an apocalyptic number.

It is an amenable number.

222111072 is an abundant number, since it is smaller than the sum of its proper divisors (431119044).

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

222111072 is an equidigital number, since it uses as much as digits as its factorization.

222111072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85713 (or 85696 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 222111072 is about 14903.3912919174. The cubic root of 222111072 is about 605.6058607568.

Adding to 222111072 its reverse (270111222), we get a palindrome (492222294).

The spelling of 222111072 in words is "two hundred twenty-two million, one hundred eleven thousand, seventy-two".