12112320113 has 4 divisors (see below), whose sum is σ = 12114762660. Its totient is φ = 12109877568.

The previous prime is 12112320097. The next prime is 12112320131. The reversal of 12112320113 is 31102321121.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5585619169 + 6526700944 = 74737^2 + 80788^2 .

It is a cyclic number.

It is not a de Polignac number, because 12112320113 - 2⁴ = 12112320097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12112320091 and 12112320100.

It is not an unprimeable number, because it can be changed into a prime (12112320173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1213820 + ... + 1223757.

It is an arithmetic number, because the mean of its divisors is an integer number (3028690665).

Almost surely, 2^12112320113 is an apocalyptic number.

It is an amenable number.

12112320113 is a deficient number, since it is larger than the sum of its proper divisors (2442547).

12112320113 is an equidigital number, since it uses as much as digits as its factorization.

12112320113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2442546.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 12112320113 its reverse (31102321121), we get a palindrome (43214641234).

The spelling of 12112320113 in words is "twelve billion, one hundred twelve million, three hundred twenty thousand, one hundred thirteen".