1112115220 has 48 divisors (see below), whose sum is σ = 2462644800. Its totient is φ = 420698880.

The previous prime is 1112115211. The next prime is 1112115227. The reversal of 1112115220 is 225112111.

It is a junction number, because it is equal to n+sod(n) for n = 1112115194 and 1112115203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112115227) 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, 248200 + ... + 252640.

It is an arithmetic number, because the mean of its divisors is an integer number (51305100).

Almost surely, 2^1112115220 is an apocalyptic number.

1112115220 is a gapful number since it is divisible by the number (10) 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 1112115220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1231322400).

1112115220 is an abundant number, since it is smaller than the sum of its proper divisors (1350529580).

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

1112115220 is a wasteful number, since it uses less digits than its factorization.

1112115220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5128 (or 5126 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 16.

The square root of 1112115220 is about 33348.3915654114. The cubic root of 1112115220 is about 1036.0560746918.

Adding to 1112115220 its reverse (225112111), we get a palindrome (1337227331).

The spelling of 1112115220 in words is "one billion, one hundred twelve million, one hundred fifteen thousand, two hundred twenty".