11101019987 has 2 divisors, whose sum is σ = 11101019988. Its totient is φ = 11101019986.

The previous prime is 11101019807. The next prime is 11101020011. The reversal of 11101019987 is 78991010111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11101019987 - 2¹⁴ = 11101003603 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11101019987.

It is not a weakly prime, because it can be changed into another prime (11101519987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5550509993 + 5550509994.

It is an arithmetic number, because the mean of its divisors is an integer number (5550509994).

Almost surely, 2^11101019987 is an apocalyptic number.

11101019987 is a deficient number, since it is larger than the sum of its proper divisors (1).

11101019987 is an equidigital number, since it uses as much as digits as its factorization.

11101019987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 38.

The spelling of 11101019987 in words is "eleven billion, one hundred one million, nineteen thousand, nine hundred eighty-seven".