12111112199971 has 2 divisors, whose sum is σ = 12111112199972. Its totient is φ = 12111112199970.

The previous prime is 12111112199941. The next prime is 12111112200001. The reversal of 12111112199971 is 17999121111121.

12111112199971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (12111112199941) and next prime (12111112200001).

It is a cyclic number.

It is not a de Polignac number, because 12111112199971 - 2⁵ = 12111112199939 is a prime.

It is not a weakly prime, because it can be changed into another prime (12111112199911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6055556099985 + 6055556099986.

It is an arithmetic number, because the mean of its divisors is an integer number (6055556099986).

Almost surely, 2^{12111112199971} is an apocalyptic number.

12111112199971 is a deficient number, since it is larger than the sum of its proper divisors (1).

12111112199971 is an equidigital number, since it uses as much as digits as its factorization.

12111112199971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20412, while the sum is 46.

The spelling of 12111112199971 in words is "twelve trillion, one hundred eleven billion, one hundred twelve million, one hundred ninety-nine thousand, nine hundred seventy-one".