12112312321123 has 8 divisors (see below), whose sum is σ = 13842663700320. Its totient is φ = 10381966203840.

The previous prime is 12112312321111. The next prime is 12112312321127. The reversal of 12112312321123 is 32112321321121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12112312321123 - 2⁹ = 12112312320611 is a prime.

It is a super-3 number, since 3×12112312321123³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (12112312321127) 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 in 7 ways as a sum of consecutive naturals, for example, 8460543 + ... + 9788023.

It is an arithmetic number, because the mean of its divisors is an integer number (1730332962540).

Almost surely, 2^{12112312321123} is an apocalyptic number.

12112312321123 is a deficient number, since it is larger than the sum of its proper divisors (1730351379197).

12112312321123 is a wasteful number, since it uses less digits than its factorization.

12112312321123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2630957.

The product of its digits is 864, while the sum is 25.

Adding to 12112312321123 its reverse (32112321321121), we get a palindrome (44224633642244).

The spelling of 12112312321123 in words is "twelve trillion, one hundred twelve billion, three hundred twelve million, three hundred twenty-one thousand, one hundred twenty-three".