112191 has 4 divisors (see below), whose sum is σ = 149592. Its totient is φ = 74792.

The previous prime is 112181. The next prime is 112199. The reversal of 112191 is 191211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 191211 = 3 ⋅63737.

It is a cyclic number.

It is not a de Polignac number, because 112191 - 2¹⁵ = 79423 is a prime.

It is a D-number.

It is a nialpdrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 112191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18696 + ... + 18701.

It is an arithmetic number, because the mean of its divisors is an integer number (37398).

2¹¹²¹⁹¹ is an apocalyptic number.

112191 is a deficient number, since it is larger than the sum of its proper divisors (37401).

112191 is an equidigital number, since it uses as much as digits as its factorization.

112191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37400.

The product of its digits is 18, while the sum is 15.

The square root of 112191 is about 334.9492498872. The cubic root of 112191 is about 48.2302307442.

It can be divided in two parts, 112 and 191, that added together give a palindrome (303).

The spelling of 112191 in words is "one hundred twelve thousand, one hundred ninety-one".