3201221 has 8 divisors (see below), whose sum is σ = 3310560. Its totient is φ = 3093552.

The previous prime is 3201199. The next prime is 3201229. The reversal of 3201221 is 1221023.

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 de Polignac number, because none of the positive numbers 2^k-3201221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3201229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4346 + ... + 5028.

It is an arithmetic number, because the mean of its divisors is an integer number (413820).

Almost surely, 2^3201221 is an apocalyptic number.

It is an amenable number.

3201221 is a deficient number, since it is larger than the sum of its proper divisors (109339).

3201221 is a wasteful number, since it uses less digits than its factorization.

3201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 3201221 is about 1789.1956293262. The cubic root of 3201221 is about 147.3800000726.

Adding to 3201221 its reverse (1221023), we get a palindrome (4422244).

The spelling of 3201221 in words is "three million, two hundred one thousand, two hundred twenty-one".