2220332321 has 4 divisors (see below), whose sum is σ = 2222853444. Its totient is φ = 2217811200.

The previous prime is 2220332299. The next prime is 2220332329. The reversal of 2220332321 is 1232330222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 329821921 + 1890510400 = 18161^2 + 43480^2 .

It is a cyclic number.

It is not a de Polignac number, because 2220332321 - 2¹⁰ = 2220331297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2220332293 and 2220332302.

It is not an unprimeable number, because it can be changed into a prime (2220332329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1259240 + ... + 1261001.

It is an arithmetic number, because the mean of its divisors is an integer number (555713361).

Almost surely, 2^2220332321 is an apocalyptic number.

It is an amenable number.

2220332321 is a deficient number, since it is larger than the sum of its proper divisors (2521123).

2220332321 is an equidigital number, since it uses as much as digits as its factorization.

2220332321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2521122.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 2220332321 is about 47120.4023858031. The cubic root of 2220332321 is about 1304.5858398118.

Adding to 2220332321 its reverse (1232330222), we get a palindrome (3452662543).

The spelling of 2220332321 in words is "two billion, two hundred twenty million, three hundred thirty-two thousand, three hundred twenty-one".