12112111122011 has 2 divisors, whose sum is σ = 12112111122012. Its totient is φ = 12112111122010.

The previous prime is 12112111121977. The next prime is 12112111122091. The reversal of 12112111122011 is 11022111121121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12112111122011 is a prime.

It is not a weakly prime, because it can be changed into another prime (12112111122091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6056055561005 + 6056055561006.

It is an arithmetic number, because the mean of its divisors is an integer number (6056055561006).

Almost surely, 2^{12112111122011} is an apocalyptic number.

12112111122011 is a deficient number, since it is larger than the sum of its proper divisors (1).

12112111122011 is an equidigital number, since it uses as much as digits as its factorization.

12112111122011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 12112111122011 its reverse (11022111121121), we get a palindrome (23134222243132).

The spelling of 12112111122011 in words is "twelve trillion, one hundred twelve billion, one hundred eleven million, one hundred twenty-two thousand, eleven".