12112113031111 has 4 divisors (see below), whose sum is σ = 12112132732672. Its totient is φ = 12112093329552.

The previous prime is 12112113031087. The next prime is 12112113031201. The reversal of 12112113031111 is 11113031121121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12112113031111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12112113037111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8897886 + ... + 10168411.

It is an arithmetic number, because the mean of its divisors is an integer number (3028033183168).

Almost surely, 2^{12112113031111} is an apocalyptic number.

12112113031111 is a deficient number, since it is larger than the sum of its proper divisors (19701561).

12112113031111 is an equidigital number, since it uses as much as digits as its factorization.

12112113031111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19701560.

The product of its (nonzero) digits is 36, while the sum is 19.

Adding to 12112113031111 its reverse (11113031121121), we get a palindrome (23225144152232).

The spelling of 12112113031111 in words is "twelve trillion, one hundred twelve billion, one hundred thirteen million, thirty-one thousand, one hundred eleven".