12120110111 has 2 divisors, whose sum is σ = 12120110112. Its totient is φ = 12120110110.

The previous prime is 12120110077. The next prime is 12120110113. The reversal of 12120110111 is 11101102121.

12120110111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12120110111 - 2⁶ = 12120110047 is a prime.

It is a Sophie Germain prime.

Together with 12120110113, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 12120110092 and 12120110101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12120110113) 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 as a sum of consecutive naturals, namely, 6060055055 + 6060055056.

It is an arithmetic number, because the mean of its divisors is an integer number (6060055056).

Almost surely, 2^12120110111 is an apocalyptic number.

12120110111 is a deficient number, since it is larger than the sum of its proper divisors (1).

12120110111 is an equidigital number, since it uses as much as digits as its factorization.

12120110111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 12120110111 its reverse (11101102121), we get a palindrome (23221212232).

The spelling of 12120110111 in words is "twelve billion, one hundred twenty million, one hundred ten thousand, one hundred eleven".