12112139 has 8 divisors (see below), whose sum is σ = 13730640. Its totient is φ = 10591776.

The previous prime is 12112127. The next prime is 12112159. The reversal of 12112139 is 93121121.

12112139 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12112139 - 2¹² = 12108043 is a prime.

It is a super-2 number, since 2×12112139² = 293407822310642, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12112139.

It is not an unprimeable number, because it can be changed into a prime (12112159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24272 + ... + 24765.

It is an arithmetic number, because the mean of its divisors is an integer number (1716330).

Almost surely, 2^12112139 is an apocalyptic number.

12112139 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

12112139 is a deficient number, since it is larger than the sum of its proper divisors (1618501).

12112139 is a wasteful number, since it uses less digits than its factorization.

12112139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49069.

The product of its digits is 108, while the sum is 20.

The square root of 12112139 is about 3480.2498473529. The cubic root of 12112139 is about 229.6537891414.

The spelling of 12112139 in words is "twelve million, one hundred twelve thousand, one hundred thirty-nine".