3221125221 has 8 divisors (see below), whose sum is σ = 4313589280. Its totient is φ = 2138038992.

The previous prime is 3221125211. The next prime is 3221125261. The reversal of 3221125221 is 1225211223.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3221125221 - 2¹⁴ = 3221108837 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 (3221125211) 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, 2343655 + ... + 2345028.

It is an arithmetic number, because the mean of its divisors is an integer number (539198660).

Almost surely, 2^3221125221 is an apocalyptic number.

It is an amenable number.

3221125221 is a deficient number, since it is larger than the sum of its proper divisors (1092464059).

3221125221 is a wasteful number, since it uses less digits than its factorization.

3221125221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4688915.

The product of its digits is 480, while the sum is 21.

The square root of 3221125221 is about 56754.9576777219. The cubic root of 3221125221 is about 1476.8482388501.

Adding to 3221125221 its reverse (1225211223), we get a palindrome (4446336444).

The spelling of 3221125221 in words is "three billion, two hundred twenty-one million, one hundred twenty-five thousand, two hundred twenty-one".