12011200111987 has 2 divisors, whose sum is σ = 12011200111988. Its totient is φ = 12011200111986.

The previous prime is 12011200111943. The next prime is 12011200112029. The reversal of 12011200111987 is 78911100211021.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12011200111987 - 2³⁹ = 11461444298099 is a prime.

It is not a weakly prime, because it can be changed into another prime (12011200111907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005600055993 + 6005600055994.

It is an arithmetic number, because the mean of its divisors is an integer number (6005600055994).

Almost surely, 2^{12011200111987} is an apocalyptic number.

12011200111987 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011200111987 is an equidigital number, since it uses as much as digits as its factorization.

12011200111987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 34.

The spelling of 12011200111987 in words is "twelve trillion, eleven billion, two hundred million, one hundred eleven thousand, nine hundred eighty-seven".