13211113318987 has 2 divisors, whose sum is σ = 13211113318988. Its totient is φ = 13211113318986.

The previous prime is 13211113318939. The next prime is 13211113319009. The reversal of 13211113318987 is 78981331111231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13211113318987 - 2¹¹ = 13211113316939 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13211113318987.

It is not a weakly prime, because it can be changed into another prime (13211113318927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6605556659493 + 6605556659494.

It is an arithmetic number, because the mean of its divisors is an integer number (6605556659494).

Almost surely, 2^{13211113318987} is an apocalyptic number.

13211113318987 is a deficient number, since it is larger than the sum of its proper divisors (1).

13211113318987 is an equidigital number, since it uses as much as digits as its factorization.

13211113318987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 49.

The spelling of 13211113318987 in words is "thirteen trillion, two hundred eleven billion, one hundred thirteen million, three hundred eighteen thousand, nine hundred eighty-seven".