3221220013 has 12 divisors (see below), whose sum is σ = 3654899584. Its totient is φ = 2833914600.

The previous prime is 3221220007. The next prime is 3221220017. The reversal of 3221220013 is 3100221223.

It is a de Polignac number, because none of the positive numbers 2^k-3221220013 is a prime.

It is a super-3 number, since 3×3221220013³ (a number of 30 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3221220017) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 425631 + ... + 433132.

Almost surely, 2^3221220013 is an apocalyptic number.

It is an amenable number.

3221220013 is a deficient number, since it is larger than the sum of its proper divisors (433679571).

3221220013 is a wasteful number, since it uses less digits than its factorization.

3221220013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858816 (or 858805 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 3221220013 is about 56755.7927704301. The cubic root of 3221220013 is about 1476.8627257157.

Adding to 3221220013 its reverse (3100221223), we get a palindrome (6321441236).

It can be divided in two parts, 32212 and 20013, that added together give a palindrome (52225).

The spelling of 3221220013 in words is "three billion, two hundred twenty-one million, two hundred twenty thousand, thirteen".