11001111101011 has 4 divisors (see below), whose sum is σ = 11124719091000. Its totient is φ = 10877503111024.

The previous prime is 11001111100913. The next prime is 11001111101017. The reversal of 11001111101011 is 11010111110011.

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 11001111101011 - 2²⁷ = 11000976883283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11001111101017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61803994861 + ... + 61803995038.

It is an arithmetic number, because the mean of its divisors is an integer number (2781179772750).

Almost surely, 2^{11001111101011} is an apocalyptic number.

11001111101011 is a deficient number, since it is larger than the sum of its proper divisors (123607989989).

11001111101011 is an equidigital number, since it uses as much as digits as its factorization.

11001111101011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123607989988.

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

Adding to 11001111101011 its reverse (11010111110011), we get a palindrome (22011222211022).

The spelling of 11001111101011 in words is "eleven trillion, one billion, one hundred eleven million, one hundred one thousand, eleven".