222222101112 has 192 divisors, whose sum is σ = 664575780960. Its totient is φ = 66521088000.

The previous prime is 222222101107. The next prime is 222222101113. The reversal of 222222101112 is 211101222222.

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 (222222101113) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 46168818 + ... + 46173630.

Almost surely, 2^222222101112 is an apocalyptic number.

222222101112 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 222222101112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (332287890480).

222222101112 is an abundant number, since it is smaller than the sum of its proper divisors (442353679848).

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

222222101112 is a wasteful number, since it uses less digits than its factorization.

222222101112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5534 (or 5527 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 222222101112 its reverse (211101222222), we get a palindrome (433323323334).

The spelling of 222222101112 in words is "two hundred twenty-two billion, two hundred twenty-two million, one hundred one thousand, one hundred twelve".