Adding to 11001 its reverse (10011), we get a palindrome (21012).
Subtracting from 11001 its reverse (10011), we obtain a triangular number (990 = T44).
Multipling 11001 by its reverse (10011), we get a palindrome (110131011).
It is a sphenic number, since it is the product of 3 distinct primes.
It is a Duffinian number.
It is a Curzon number.
211001 is an apocalyptic number.
It is an amenable number.
11001 is a wasteful number, since it uses less digits than its factorization.
11001 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 215.
The square root of 11001 is about 104.8856520216. The cubic root of 11001 is about 22.2404748186.
The spelling of 11001 in words is "eleven thousand, one", and thus it is an iban number.