3201000221 has 4 divisors (see below), whose sum is σ = 3204046944. Its totient is φ = 3197953500.

The previous prime is 3201000211. The next prime is 3201000247. The reversal of 3201000221 is 1220001023.

It is a happy number.

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 3201000221 - 2⁶ = 3201000157 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 (3201000211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1521785 + ... + 1523886.

It is an arithmetic number, because the mean of its divisors is an integer number (801011736).

Almost surely, 2^3201000221 is an apocalyptic number.

It is an amenable number.

3201000221 is a deficient number, since it is larger than the sum of its proper divisors (3046723).

3201000221 is a wasteful number, since it uses less digits than its factorization.

3201000221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3046722.

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

The square root of 3201000221 is about 56577.3825923398. The cubic root of 3201000221 is about 1473.7661186984.

Adding to 3201000221 its reverse (1220001023), we get a palindrome (4421001244).

The spelling of 3201000221 in words is "three billion, two hundred one million, two hundred twenty-one", and thus it is an aban number.