113221992 has 128 divisors (see below), whose sum is σ = 320060160. Its totient is φ = 33146880.

The previous prime is 113221957. The next prime is 113222009. The reversal of 113221992 is 299122311.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 677893 + ... + 678059.

It is an arithmetic number, because the mean of its divisors is an integer number (2500470).

Almost surely, 2^113221992 is an apocalyptic number.

113221992 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 113221992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160030080).

113221992 is an abundant number, since it is smaller than the sum of its proper divisors (206838168).

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

113221992 is a wasteful number, since it uses less digits than its factorization.

113221992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283 (or 279 counting only the distinct ones).

The product of its digits is 1944, while the sum is 30.

The square root of 113221992 is about 10640.5823148924. The cubic root of 113221992 is about 483.7751955575.

It can be divided in two parts, 1132219 and 92, that added together give a palindrome (1132311).

The spelling of 113221992 in words is "one hundred thirteen million, two hundred twenty-one thousand, nine hundred ninety-two".