12011111110987 has 2 divisors, whose sum is σ = 12011111110988. Its totient is φ = 12011111110986.

The previous prime is 12011111110891. The next prime is 12011111111047. The reversal of 12011111110987 is 78901111111021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12011111110987 - 2²⁷ = 12010976893259 is a prime.

It is a super-3 number, since 3×12011111110987³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (12011111110387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005555555493 + 6005555555494.

It is an arithmetic number, because the mean of its divisors is an integer number (6005555555494).

Almost surely, 2^{12011111110987} is an apocalyptic number.

12011111110987 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011111110987 is an equidigital number, since it uses as much as digits as its factorization.

12011111110987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 34.

Adding to 12011111110987 its sum of digits (34), we get a palindrome (12011111111021).

The spelling of 12011111110987 in words is "twelve trillion, eleven billion, one hundred eleven million, one hundred ten thousand, nine hundred eighty-seven".