12112331321 has 2 divisors, whose sum is σ = 12112331322. Its totient is φ = 12112331320.

The previous prime is 12112331293. The next prime is 12112331327. The reversal of 12112331321 is 12313321121.

It is a happy number.

12112331321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12058455721 + 53875600 = 109811^2 + 7340^2 .

It is a cyclic number.

It is not a de Polignac number, because 12112331321 - 2¹⁴ = 12112314937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12112331293 and 12112331302.

It is not a weakly prime, because it can be changed into another prime (12112331327) 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 as a sum of consecutive naturals, namely, 6056165660 + 6056165661.

It is an arithmetic number, because the mean of its divisors is an integer number (6056165661).

Almost surely, 2^12112331321 is an apocalyptic number.

It is an amenable number.

12112331321 is a deficient number, since it is larger than the sum of its proper divisors (1).

12112331321 is an equidigital number, since it uses as much as digits as its factorization.

12112331321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 20.

Adding to 12112331321 its reverse (12313321121), we get a palindrome (24425652442).

The spelling of 12112331321 in words is "twelve billion, one hundred twelve million, three hundred thirty-one thousand, three hundred twenty-one".