12112311979 has 2 divisors, whose sum is σ = 12112311980. Its totient is φ = 12112311978.

The previous prime is 12112311961. The next prime is 12112312013. The reversal of 12112311979 is 97911321121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12112311979 - 2⁹ = 12112311467 is a prime.

It is not a weakly prime, because it can be changed into another prime (12112311179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6056155989 + 6056155990.

It is an arithmetic number, because the mean of its divisors is an integer number (6056155990).

Almost surely, 2^12112311979 is an apocalyptic number.

12112311979 is a deficient number, since it is larger than the sum of its proper divisors (1).

12112311979 is an equidigital number, since it uses as much as digits as its factorization.

12112311979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6804, while the sum is 37.

The spelling of 12112311979 in words is "twelve billion, one hundred twelve million, three hundred eleven thousand, nine hundred seventy-nine".