1211113245887 has 2 divisors, whose sum is σ = 1211113245888. Its totient is φ = 1211113245886.

The previous prime is 1211113245877. The next prime is 1211113245959. The reversal of 1211113245887 is 7885423111121.

It is a weak prime.

It is an emirp because it is prime and its reverse (7885423111121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1211113245887 - 2⁴ = 1211113245871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1211113245877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605556622943 + 605556622944.

It is an arithmetic number, because the mean of its divisors is an integer number (605556622944).

Almost surely, 2^{1211113245887} is an apocalyptic number.

1211113245887 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211113245887 is an equidigital number, since it uses as much as digits as its factorization.

1211113245887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 107520, while the sum is 44.

The spelling of 1211113245887 in words is "one trillion, two hundred eleven billion, one hundred thirteen million, two hundred forty-five thousand, eight hundred eighty-seven".