12112012191 has 8 divisors (see below), whose sum is σ = 16376805504. Its totient is φ = 7960946840.

The previous prime is 12112012177. The next prime is 12112012223. The reversal of 12112012191 is 19121021121.

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

It is a cyclic number.

It is not a de Polignac number, because 12112012191 - 2⁷ = 12112012063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12112012291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28431741 + ... + 28432166.

It is an arithmetic number, because the mean of its divisors is an integer number (2047100688).

Almost surely, 2^12112012191 is an apocalyptic number.

12112012191 is a deficient number, since it is larger than the sum of its proper divisors (4264793313).

12112012191 is an equidigital number, since it uses as much as digits as its factorization.

12112012191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56863981.

The product of its (nonzero) digits is 72, while the sum is 21.

The spelling of 12112012191 in words is "twelve billion, one hundred twelve million, twelve thousand, one hundred ninety-one".