2221443321 has 4 divisors (see below), whose sum is σ = 2961924432. Its totient is φ = 1480962212.

The previous prime is 2221443313. The next prime is 2221443337. The reversal of 2221443321 is 1233441222.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2221443321 - 2³ = 2221443313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2221443291 and 2221443300.

It is not an unprimeable number, because it can be changed into a prime (2221443361) 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, 370240551 + ... + 370240556.

It is an arithmetic number, because the mean of its divisors is an integer number (740481108).

Almost surely, 2^2221443321 is an apocalyptic number.

It is an amenable number.

2221443321 is a deficient number, since it is larger than the sum of its proper divisors (740481111).

2221443321 is an equidigital number, since it uses as much as digits as its factorization.

2221443321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740481110.

The product of its digits is 2304, while the sum is 24.

The square root of 2221443321 is about 47132.1898600097. The cubic root of 2221443321 is about 1304.8033978134.

Adding to 2221443321 its reverse (1233441222), we get a palindrome (3454884543).

The spelling of 2221443321 in words is "two billion, two hundred twenty-one million, four hundred forty-three thousand, three hundred twenty-one".