112122191 has 4 divisors (see below), whose sum is σ = 118717632. Its totient is φ = 105526752.

The previous prime is 112122187. The next prime is 112122193. The reversal of 112122191 is 191221211.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 112122191 - 2² = 112122187 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112122193) 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 3 ways as a sum of consecutive naturals, for example, 3297695 + ... + 3297728.

It is an arithmetic number, because the mean of its divisors is an integer number (29679408).

Almost surely, 2^112122191 is an apocalyptic number.

112122191 is a deficient number, since it is larger than the sum of its proper divisors (6595441).

112122191 is an equidigital number, since it uses as much as digits as its factorization.

112122191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6595440.

The product of its digits is 72, while the sum is 20.

The square root of 112122191 is about 10588.7766526639. The cubic root of 112122191 is about 482.2036853708.

The spelling of 112122191 in words is "one hundred twelve million, one hundred twenty-two thousand, one hundred ninety-one".