112221220 has 24 divisors (see below), whose sum is σ = 248068800. Its totient is φ = 42525792.

The previous prime is 112221217. The next prime is 112221227. The reversal of 112221220 is 22122211.

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 112221220.

It is not an unprimeable number, because it can be changed into a prime (112221227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147280 + ... + 148039.

It is an arithmetic number, because the mean of its divisors is an integer number (10336200).

Almost surely, 2^112221220 is an apocalyptic number.

112221220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

112221220 is an abundant number, since it is smaller than the sum of its proper divisors (135847580).

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

112221220 is a wasteful number, since it uses less digits than its factorization.

112221220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295347 (or 295345 counting only the distinct ones).

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

The square root of 112221220 is about 10593.4517509639. The cubic root of 112221220 is about 482.3456082041.

Adding to 112221220 its reverse (22122211), we get a palindrome (134343431).

Subtracting from 112221220 its reverse (22122211), we obtain a palindrome (90099009).

The spelling of 112221220 in words is "one hundred twelve million, two hundred twenty-one thousand, two hundred twenty".