12031121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a de Polignac number, because none of the positive numbers 2k-12031121 is a prime.
It is a Duffinian number.
Almost surely, 212031121 is an apocalyptic number.
It is an amenable number.
12031121 is a wasteful number, since it uses less digits than its factorization.
12031121 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 6991.
The square root of 12031121 is about 3468.5906359788. The cubic root of 12031121 is about 229.1405923980.
Adding to 12031121 its reverse (12113021), we get a palindrome (24144142).
The spelling of 12031121 in words is "twelve million, thirty-one thousand, one hundred twenty-one".