1211120119987 has 2 divisors, whose sum is σ = 1211120119988. Its totient is φ = 1211120119986.

The previous prime is 1211120119931. The next prime is 1211120120053. The reversal of 1211120119987 is 7899110211121.

It is a weak prime.

It is an emirp because it is prime and its reverse (7899110211121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1211120119987 is a prime.

It is not a weakly prime, because it can be changed into another prime (1211120119487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605560059993 + 605560059994.

It is an arithmetic number, because the mean of its divisors is an integer number (605560059994).

Almost surely, 2^{1211120119987} is an apocalyptic number.

1211120119987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211120119987 is an equidigital number, since it uses as much as digits as its factorization.

1211120119987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 43.

The spelling of 1211120119987 in words is "one trillion, two hundred eleven billion, one hundred twenty million, one hundred nineteen thousand, nine hundred eighty-seven".