Adding to 11001000001111 its reverse (11110000010011), we get a palindrome (22111000011122).
It is a happy number.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is a Duffinian number.
It is a congruent number.
Almost surely, 211001000001111 is an apocalyptic number.
11001000001111 is an equidigital number, since it uses as much as digits as its factorization.
11001000001111 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 60779005712.
The spelling of 11001000001111 in words is "eleven trillion, one billion, one thousand, one hundred eleven".