3221041221 has 80 divisors (see below), whose sum is σ = 5312926080. Its totient is φ = 1936327680.

The previous prime is 3221041217. The next prime is 3221041247. The reversal of 3221041221 is 1221401223.

It is a happy number.

It is not a de Polignac number, because 3221041221 - 2² = 3221041217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3221041194 and 3221041203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3221041261) 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 79 ways as a sum of consecutive naturals, for example, 3330480 + ... + 3331446.

It is an arithmetic number, because the mean of its divisors is an integer number (66411576).

Almost surely, 2^3221041221 is an apocalyptic number.

It is an amenable number.

3221041221 is a deficient number, since it is larger than the sum of its proper divisors (2091884859).

3221041221 is a wasteful number, since it uses less digits than its factorization.

3221041221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096 (or 1087 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 3221041221 is about 56754.2176494399. The cubic root of 3221041221 is about 1476.8354010660.

Adding to 3221041221 its reverse (1221401223), we get a palindrome (4442442444).

The spelling of 3221041221 in words is "three billion, two hundred twenty-one million, forty-one thousand, two hundred twenty-one".