11110001999 has 2 divisors, whose sum is σ = 11110002000. Its totient is φ = 11110001998.

The previous prime is 11110001989. The next prime is 11110002047. The reversal of 11110001999 is 99910001111.

It is a weak prime.

It is an emirp because it is prime and its reverse (99910001111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11110001999 - 2⁴ = 11110001983 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11110001989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555000999 + 5555001000.

It is an arithmetic number, because the mean of its divisors is an integer number (5555001000).

Almost surely, 2^11110001999 is an apocalyptic number.

11110001999 is a deficient number, since it is larger than the sum of its proper divisors (1).

11110001999 is an equidigital number, since it uses as much as digits as its factorization.

11110001999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 729, while the sum is 32.

The spelling of 11110001999 in words is "eleven billion, one hundred ten million, one thousand, nine hundred ninety-nine".