11101001987 has 2 divisors, whose sum is σ = 11101001988. Its totient is φ = 11101001986.

The previous prime is 11101001971. The next prime is 11101002019. The reversal of 11101001987 is 78910010111.

11101001987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (78910010111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11101001987 - 2⁴ = 11101001971 is a prime.

It is not a weakly prime, because it can be changed into another prime (11101001917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5550500993 + 5550500994.

It is an arithmetic number, because the mean of its divisors is an integer number (5550500994).

Almost surely, 2^11101001987 is an apocalyptic number.

11101001987 is a deficient number, since it is larger than the sum of its proper divisors (1).

11101001987 is an equidigital number, since it uses as much as digits as its factorization.

11101001987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 29.

The spelling of 11101001987 in words is "eleven billion, one hundred one million, one thousand, nine hundred eighty-seven".