Adding to 111010110111001 its reverse (100111011010111), we get a palindrome (211121121121112).
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.
Almost surely, 2111010110111001 is an apocalyptic number.
It is an amenable number.
111010110111001 is an equidigital number, since it uses as much as digits as its factorization.
111010110111001 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3063144602.
The spelling of 111010110111001 in words is "one hundred eleven trillion, ten billion, one hundred ten million, one hundred eleven thousand, one".