Adding to 3222321 its reverse (1232223), we get a palindrome (4454544).
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1232223 = 3 ⋅410741.
It is a cyclic number.
It is a D-number.
It is a self number, because there is not a number n which added to its sum of digits gives 3222321.
Almost surely, 23222321 is an apocalyptic number.
It is an amenable number.
3222321 is a wasteful number, since it uses less digits than its factorization.
3222321 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1074110.
The square root of 3222321 is about 1795.0824493599. The cubic root of 3222321 is about 147.7030966469.
The spelling of 3222321 in words is "three million, two hundred twenty-two thousand, three hundred twenty-one".