12111221000987 has 2 divisors, whose sum is σ = 12111221000988. Its totient is φ = 12111221000986.

The previous prime is 12111221000909. The next prime is 12111221001001. The reversal of 12111221000987 is 78900012211121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12111221000987 - 2¹⁰ = 12111220999963 is a prime.

It is not a weakly prime, because it can be changed into another prime (12111221005987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6055610500493 + 6055610500494.

It is an arithmetic number, because the mean of its divisors is an integer number (6055610500494).

Almost surely, 2^{12111221000987} is an apocalyptic number.

12111221000987 is a deficient number, since it is larger than the sum of its proper divisors (1).

12111221000987 is an equidigital number, since it uses as much as digits as its factorization.

12111221000987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 35.

The spelling of 12111221000987 in words is "twelve trillion, one hundred eleven billion, two hundred twenty-one million, nine hundred eighty-seven", and thus it is an aban number.