115220112 has 80 divisors (see below), whose sum is σ = 344085120. Its totient is φ = 32541696.

The previous prime is 115220071. The next prime is 115220113. The reversal of 115220112 is 211022511.

It is a junction number, because it is equal to n+sod(n) for n = 115220091 and 115220100.

It is not an unprimeable number, because it can be changed into a prime (115220113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27978 + ... + 31830.

It is an arithmetic number, because the mean of its divisors is an integer number (4301064).

Almost surely, 2^115220112 is an apocalyptic number.

115220112 is a gapful number since it is divisible by the number (12) 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 115220112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172042560).

115220112 is an abundant number, since it is smaller than the sum of its proper divisors (228865008).

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

115220112 is a wasteful number, since it uses less digits than its factorization.

115220112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3960 (or 3954 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 115220112 is about 10734.0631635928. The cubic root of 115220112 is about 486.6044740275.

Adding to 115220112 its reverse (211022511), we get a palindrome (326242623).

The spelling of 115220112 in words is "one hundred fifteen million, two hundred twenty thousand, one hundred twelve".