12100120111 has 2 divisors, whose sum is σ = 12100120112. Its totient is φ = 12100120110.

The previous prime is 12100120093. The next prime is 12100120147. The reversal of 12100120111 is 11102100121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12100120111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12100120181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6050060055 + 6050060056.

It is an arithmetic number, because the mean of its divisors is an integer number (6050060056).

Almost surely, 2^12100120111 is an apocalyptic number.

12100120111 is a deficient number, since it is larger than the sum of its proper divisors (1).

12100120111 is an equidigital number, since it uses as much as digits as its factorization.

12100120111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 12100120111 its reverse (11102100121), we get a palindrome (23202220232).

The spelling of 12100120111 in words is "twelve billion, one hundred million, one hundred twenty thousand, one hundred eleven".