2221304353 has 4 divisors (see below), whose sum is σ = 2229562260. Its totient is φ = 2213046448.

The previous prime is 2221304341. The next prime is 2221304377. The reversal of 2221304353 is 3534031222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3534031222 = 2 ⋅1767015611.

It can be written as a sum of positive squares in 2 ways, for example, as 1236788224 + 984516129 = 35168^2 + 31377^2 .

It is a cyclic number.

It is not a de Polignac number, because 2221304353 - 2⁵ = 2221304321 is a prime.

It is a super-3 number, since 3×2221304353³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221304653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4128550 + ... + 4129087.

It is an arithmetic number, because the mean of its divisors is an integer number (557390565).

Almost surely, 2^2221304353 is an apocalyptic number.

It is an amenable number.

2221304353 is a deficient number, since it is larger than the sum of its proper divisors (8257907).

2221304353 is an equidigital number, since it uses as much as digits as its factorization.

2221304353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8257906.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 2221304353 is about 47130.7156003386. The cubic root of 2221304353 is about 1304.7761888215.

Adding to 2221304353 its reverse (3534031222), we get a palindrome (5755335575).

The spelling of 2221304353 in words is "two billion, two hundred twenty-one million, three hundred four thousand, three hundred fifty-three".