112191103681 has 8 divisors (see below), whose sum is σ = 116181820584. Its totient is φ = 108269790720.

The previous prime is 112191103657. The next prime is 112191103793. The reversal of 112191103681 is 186301191211.

It can be written as a sum of positive squares in 4 ways, for example, as 106090000 + 112085013681 = 10300^2 + 334791^2 .

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

It is not a de Polignac number, because 112191103681 - 2²¹ = 112189006529 is a prime.

It is a super-2 number, since 2×112191103681² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (112191103601) 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, 17347696 + ... + 17354161.

It is an arithmetic number, because the mean of its divisors is an integer number (14522727573).

Almost surely, 2^112191103681 is an apocalyptic number.

It is an amenable number.

112191103681 is a deficient number, since it is larger than the sum of its proper divisors (3990716903).

112191103681 is an equidigital number, since it uses as much as digits as its factorization.

112191103681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34701971.

The product of its (nonzero) digits is 2592, while the sum is 34.

Adding to 112191103681 its reverse (186301191211), we get a palindrome (298492294892).

The spelling of 112191103681 in words is "one hundred twelve billion, one hundred ninety-one million, one hundred three thousand, six hundred eighty-one".