3321011220 has 96 divisors (see below), whose sum is σ = 9572169600. Its totient is φ = 859682304.

The previous prime is 3321011207. The next prime is 3321011339. The reversal of 3321011220 is 221101233.

It is a super-2 number, since 2×3321011220² = 22058231046731776800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 3321011220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1128511 + ... + 1131449.

It is an arithmetic number, because the mean of its divisors is an integer number (99710100).

Almost surely, 2^3321011220 is an apocalyptic number.

3321011220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3321011220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4786084800).

3321011220 is an abundant number, since it is smaller than the sum of its proper divisors (6251158380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3321011220 is a wasteful number, since it uses less digits than its factorization.

3321011220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3497 (or 3495 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 3321011220 is about 57628.2154851250. The cubic root of 3321011220 is about 1491.9586301711.

Adding to 3321011220 its reverse (221101233), we get a palindrome (3542112453).

The spelling of 3321011220 in words is "three billion, three hundred twenty-one million, eleven thousand, two hundred twenty".