222222112 has 48 divisors (see below), whose sum is σ = 503883072. Its totient is φ = 94498560.

The previous prime is 222222103. The next prime is 222222131. The reversal of 222222112 is 211222222.

It is a Harshad number since it is a multiple of its sum of digits (16).

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25558 + ... + 33130.

It is an arithmetic number, because the mean of its divisors is an integer number (10497564).

Almost surely, 2^222222112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222222112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (251941536).

222222112 is an abundant number, since it is smaller than the sum of its proper divisors (281660960).

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

222222112 is a wasteful number, since it uses less digits than its factorization.

222222112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7721 (or 7713 counting only the distinct ones).

The product of its digits is 128, while the sum is 16.

The square root of 222222112 is about 14907.1161530324. The cubic root of 222222112 is about 605.7067641338.

Adding to 222222112 its reverse (211222222), we get a palindrome (433444334).

The spelling of 222222112 in words is "two hundred twenty-two million, two hundred twenty-two thousand, one hundred twelve".