2221030321 has 8 divisors (see below), whose sum is σ = 2234239488. Its totient is φ = 2207838000.

The previous prime is 2221030319. The next prime is 2221030363. The reversal of 2221030321 is 1230301222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2221030321 - 2¹ = 2221030319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2221030295 and 2221030304.

It is not an unprimeable number, because it can be changed into a prime (2221030381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 342691 + ... + 349111.

It is an arithmetic number, because the mean of its divisors is an integer number (279279936).

Almost surely, 2^2221030321 is an apocalyptic number.

It is an amenable number.

2221030321 is a deficient number, since it is larger than the sum of its proper divisors (13209167).

2221030321 is a wasteful number, since it uses less digits than its factorization.

2221030321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8423.

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

The square root of 2221030321 is about 47127.8083619427. The cubic root of 2221030321 is about 1304.7225318891.

Adding to 2221030321 its reverse (1230301222), we get a palindrome (3451331543).

The spelling of 2221030321 in words is "two billion, two hundred twenty-one million, thirty thousand, three hundred twenty-one".