12112331993 has 2 divisors, whose sum is σ = 12112331994. Its totient is φ = 12112331992.

The previous prime is 12112331953. The next prime is 12112332047. The reversal of 12112331993 is 39913321121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9911596249 + 2200735744 = 99557^2 + 46912^2 .

It is a cyclic number.

It is not a de Polignac number, because 12112331993 - 2⁶ = 12112331929 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (12112331953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6056165996 + 6056165997.

It is an arithmetic number, because the mean of its divisors is an integer number (6056165997).

Almost surely, 2^12112331993 is an apocalyptic number.

It is an amenable number.

12112331993 is a deficient number, since it is larger than the sum of its proper divisors (1).

12112331993 is an equidigital number, since it uses as much as digits as its factorization.

12112331993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8748, while the sum is 35.

The spelling of 12112331993 in words is "twelve billion, one hundred twelve million, three hundred thirty-one thousand, nine hundred ninety-three".