3220002221220 has 72 divisors (see below), whose sum is σ = 10031322255864. Its totient is φ = 835460034048.

The previous prime is 3220002221209. The next prime is 3220002221251. The reversal of 3220002221220 is 221222000223.

3220002221220 is a `hidden beast` number, since 3 + 220 + 0 + 0 + 2 + 221 + 220 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1087444353636 + 2132557867584 = 1042806^2 + 1460328^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 3220002221193 and 3220002221202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 241735249 + ... + 241748568.

Almost surely, 2^{3220002221220} is an apocalyptic number.

3220002221220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3220002221220 is an abundant number, since it is smaller than the sum of its proper divisors (6811320034644).

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

3220002221220 is a wasteful number, since it uses less digits than its factorization.

3220002221220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483483869 (or 483483864 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 3220002221220 its reverse (221222000223), we get a palindrome (3441224221443).

The spelling of 3220002221220 in words is "three trillion, two hundred twenty billion, two million, two hundred twenty-one thousand, two hundred twenty".