11001010111111 has 4 divisors (see below), whose sum is σ = 11181354539224. Its totient is φ = 10820665683000.

The previous prime is 11001010111073. The next prime is 11001010111123. The reversal of 11001010111111 is 11111101010011.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11001010111111 - 2¹⁹ = 11001009586823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11001010111141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90172213965 + ... + 90172214086.

It is an arithmetic number, because the mean of its divisors is an integer number (2795338634806).

Almost surely, 2^{11001010111111} is an apocalyptic number.

11001010111111 is a deficient number, since it is larger than the sum of its proper divisors (180344428113).

11001010111111 is an equidigital number, since it uses as much as digits as its factorization.

11001010111111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180344428112.

The product of its (nonzero) digits is 1, while the sum is 10.

Adding to 11001010111111 its reverse (11111101010011), we get a palindrome (22112111121122).

The spelling of 11001010111111 in words is "eleven trillion, one billion, ten million, one hundred eleven thousand, one hundred eleven".