11121119987 has 2 divisors, whose sum is σ = 11121119988. Its totient is φ = 11121119986.

The previous prime is 11121119927. The next prime is 11121120041. The reversal of 11121119987 is 78991112111.

It is a strong prime.

It is an emirp because it is prime and its reverse (78991112111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11121119987 - 2¹⁴ = 11121103603 is a prime.

It is not a weakly prime, because it can be changed into another prime (11121119927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5560559993 + 5560559994.

It is an arithmetic number, because the mean of its divisors is an integer number (5560559994).

Almost surely, 2^11121119987 is an apocalyptic number.

11121119987 is a deficient number, since it is larger than the sum of its proper divisors (1).

11121119987 is an equidigital number, since it uses as much as digits as its factorization.

11121119987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 41.

The spelling of 11121119987 in words is "eleven billion, one hundred twenty-one million, one hundred nineteen thousand, nine hundred eighty-seven".