12112112123 has 2 divisors, whose sum is σ = 12112112124. Its totient is φ = 12112112122.

The previous prime is 12112112119. The next prime is 12112112141. The reversal of 12112112123 is 32121121121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12112112123 - 2² = 12112112119 is a prime.

It is not a weakly prime, because it can be changed into another prime (12112112143) 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 as a sum of consecutive naturals, namely, 6056056061 + 6056056062.

It is an arithmetic number, because the mean of its divisors is an integer number (6056056062).

Almost surely, 2^12112112123 is an apocalyptic number.

12112112123 is a deficient number, since it is larger than the sum of its proper divisors (1).

12112112123 is an equidigital number, since it uses as much as digits as its factorization.

12112112123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48, while the sum is 17.

Adding to 12112112123 its reverse (32121121121), we get a palindrome (44233233244).

The spelling of 12112112123 in words is "twelve billion, one hundred twelve million, one hundred twelve thousand, one hundred twenty-three".