Adding to 201201221 its reverse (122102102), we get a palindrome (323303323).
It is a happy number.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is a Duffinian number.
It is a Curzon number.
It is a congruent number.
Almost surely, 2201201221 is an apocalyptic number.
It is an amenable number.
201201221 is a wasteful number, since it uses less digits than its factorization.
201201221 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 11251.
The square root of 201201221 is about 14184.5416210747. The cubic root of 201201221 is about 585.9720086262.
The spelling of 201201221 in words is "two hundred one million, two hundred one thousand, two hundred twenty-one".