12112320123 has 32 divisors (see below), whose sum is σ = 19184256000. Its totient is φ = 7526072448.

The previous prime is 12112320097. The next prime is 12112320131. The reversal of 12112320123 is 32102321121.

It is not a de Polignac number, because 12112320123 - 2³² = 7817352827 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12112320096 and 12112320105.

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

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80823 + ... + 175376.

It is an arithmetic number, because the mean of its divisors is an integer number (599508000).

Almost surely, 2^12112320123 is an apocalyptic number.

12112320123 is a deficient number, since it is larger than the sum of its proper divisors (7071935877).

12112320123 is a wasteful number, since it uses less digits than its factorization.

12112320123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256328 (or 256322 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 12112320123 its reverse (32102321121), we get a palindrome (44214641244).

It can be divided in two parts, 121123 and 20123, that added together give a triangular number (141246 = T₅₃₁).

The spelling of 12112320123 in words is "twelve billion, one hundred twelve million, three hundred twenty thousand, one hundred twenty-three".