222191112 has 128 divisors (see below), whose sum is σ = 660078720. Its totient is φ = 61440000.

The previous prime is 222191087. The next prime is 222191113. The reversal of 222191112 is 211191222.

222191112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (222191113) 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, 346312 + ... + 346952.

It is an arithmetic number, because the mean of its divisors is an integer number (5156865).

Almost surely, 2^222191112 is an apocalyptic number.

222191112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222191112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (330039360).

222191112 is an abundant number, since it is smaller than the sum of its proper divisors (437887608).

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

222191112 is a wasteful number, since it uses less digits than its factorization.

222191112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775 (or 771 counting only the distinct ones).

The product of its digits is 144, while the sum is 21.

The square root of 222191112 is about 14906.0763449004. The cubic root of 222191112 is about 605.6785974455.

The spelling of 222191112 in words is "two hundred twenty-two million, one hundred ninety-one thousand, one hundred twelve".