112099981 has 8 divisors (see below), whose sum is σ = 134857280. Its totient is φ = 91028448.

The previous prime is 112099969. The next prime is 112099991. The reversal of 112099981 is 189990211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 112099981 - 2¹¹ = 112097933 is a prime.

It is a super-2 number, since 2×112099981² = 25132811480400722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112099901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 421296 + ... + 421561.

It is an arithmetic number, because the mean of its divisors is an integer number (16857160).

Almost surely, 2^112099981 is an apocalyptic number.

It is an amenable number.

112099981 is a deficient number, since it is larger than the sum of its proper divisors (22757299).

112099981 is an equidigital number, since it uses as much as digits as its factorization.

112099981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842883.

The product of its (nonzero) digits is 11664, while the sum is 40.

The square root of 112099981 is about 10587.7278487880. The cubic root of 112099981 is about 482.1718437672.

It can be divided in two parts, 1120 and 99981, that added together give a palindrome (101101).

The spelling of 112099981 in words is "one hundred twelve million, ninety-nine thousand, nine hundred eighty-one".