3212221 has 4 divisors (see below), whose sum is σ = 3220992. Its totient is φ = 3203452.

The previous prime is 3212213. The next prime is 3212233. The reversal of 3212221 is 1222123.

3212221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 3212221 - 2³ = 3212213 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 (3212021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3811 + ... + 4576.

It is an arithmetic number, because the mean of its divisors is an integer number (805248).

Almost surely, 2^3212221 is an apocalyptic number.

It is an amenable number.

3212221 is a deficient number, since it is larger than the sum of its proper divisors (8771).

3212221 is an equidigital number, since it uses as much as digits as its factorization.

3212221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8770.

The product of its digits is 48, while the sum is 13.

The square root of 3212221 is about 1792.2670001984. The cubic root of 3212221 is about 147.5486155939.

Adding to 3212221 its reverse (1222123), we get a palindrome (4434344).

The spelling of 3212221 in words is "three million, two hundred twelve thousand, two hundred twenty-one".