3220212321 has 32 divisors (see below), whose sum is σ = 5035536000. Its totient is φ = 2028245184.

The previous prime is 3220212311. The next prime is 3220212323. The reversal of 3220212321 is 1232120223.

3220212321 is a `hidden beast` number, since 322 + 0 + 21 + 2 + 321 = 666.

It is not a de Polignac number, because 3220212321 - 2¹⁵ = 3220179553 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3220212294 and 3220212303.

It is not an unprimeable number, because it can be changed into a prime (3220212323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 182935 + ... + 199763.

It is an arithmetic number, because the mean of its divisors is an integer number (157360500).

Almost surely, 2^3220212321 is an apocalyptic number.

It is an amenable number.

3220212321 is a deficient number, since it is larger than the sum of its proper divisors (1815323679).

3220212321 is a wasteful number, since it uses less digits than its factorization.

3220212321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17230 (or 17224 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 3220212321 is about 56746.9146385951. The cubic root of 3220212321 is about 1476.7087076769.

Adding to 3220212321 its reverse (1232120223), we get a palindrome (4452332544).

The spelling of 3220212321 in words is "three billion, two hundred twenty million, two hundred twelve thousand, three hundred twenty-one".