112212220 has 12 divisors (see below), whose sum is σ = 235645704. Its totient is φ = 44884880.

The previous prime is 112212211. The next prime is 112212227. The reversal of 112212220 is 22212211.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 112212220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112212227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2805286 + ... + 2805325.

It is an arithmetic number, because the mean of its divisors is an integer number (19637142).

Almost surely, 2^112212220 is an apocalyptic number.

112212220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

112212220 is an abundant number, since it is smaller than the sum of its proper divisors (123433484).

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

112212220 is a wasteful number, since it uses less digits than its factorization.

112212220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5610620 (or 5610618 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 112212220 is about 10593.0269517263. The cubic root of 112212220 is about 482.3327133566.

Adding to 112212220 its reverse (22212211), we get a palindrome (134424431).

Subtracting from 112212220 its reverse (22212211), we obtain a palindrome (90000009).

The spelling of 112212220 in words is "one hundred twelve million, two hundred twelve thousand, two hundred twenty".