112721089 has 8 divisors (see below), whose sum is σ = 123683112. Its totient is φ = 102086400.

The previous prime is 112721069. The next prime is 112721099. The reversal of 112721089 is 980127211.

It can be written as a sum of positive squares in 4 ways, for example, as 16524225 + 96196864 = 4065^2 + 9808^2 .

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

It is not a de Polignac number, because 112721089 - 2⁹ = 112720577 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 112721089.

It is not an unprimeable number, because it can be changed into a prime (112721039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81112 + ... + 82489.

It is an arithmetic number, because the mean of its divisors is an integer number (15460389).

Almost surely, 2^112721089 is an apocalyptic number.

It is an amenable number.

112721089 is a deficient number, since it is larger than the sum of its proper divisors (10962023).

112721089 is a wasteful number, since it uses less digits than its factorization.

112721089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163667.

The product of its (nonzero) digits is 2016, while the sum is 31.

The square root of 112721089 is about 10617.0188376964. The cubic root of 112721089 is about 483.0607210474.

The spelling of 112721089 in words is "one hundred twelve million, seven hundred twenty-one thousand, eighty-nine".