11001112211987 has 2 divisors, whose sum is σ = 11001112211988. Its totient is φ = 11001112211986.

The previous prime is 11001112211959. The next prime is 11001112212011. The reversal of 11001112211987 is 78911221110011.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11001112211987 - 2³² = 10996817244691 is a prime.

It is not a weakly prime, because it can be changed into another prime (11001112210987) 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, 5500556105993 + 5500556105994.

It is an arithmetic number, because the mean of its divisors is an integer number (5500556105994).

Almost surely, 2^{11001112211987} is an apocalyptic number.

11001112211987 is a deficient number, since it is larger than the sum of its proper divisors (1).

11001112211987 is an equidigital number, since it uses as much as digits as its factorization.

11001112211987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 35.

Adding to 11001112211987 its reverse (78911221110011), we get a palindrome (89912333321998).

The spelling of 11001112211987 in words is "eleven trillion, one billion, one hundred twelve million, two hundred eleven thousand, nine hundred eighty-seven".