2221003313 has 4 divisors (see below), whose sum is σ = 2224699428. Its totient is φ = 2217307200.

The previous prime is 2221003297. The next prime is 2221003331. The reversal of 2221003313 is 3133001222.

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 1401154624 + 819848689 = 37432^2 + 28633^2 .

It is a cyclic number.

It is not a de Polignac number, because 2221003313 - 2⁴ = 2221003297 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2221003291 and 2221003300.

It is not an unprimeable number, because it can be changed into a prime (2221003013) 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, 1847156 + ... + 1848357.

It is an arithmetic number, because the mean of its divisors is an integer number (556174857).

Almost surely, 2^2221003313 is an apocalyptic number.

It is an amenable number.

2221003313 is a deficient number, since it is larger than the sum of its proper divisors (3696115).

2221003313 is an equidigital number, since it uses as much as digits as its factorization.

2221003313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3696114.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 2221003313 is about 47127.5218211185. The cubic root of 2221003313 is about 1304.7172433392.

Adding to 2221003313 its reverse (3133001222), we get a palindrome (5354004535).

The spelling of 2221003313 in words is "two billion, two hundred twenty-one million, three thousand, three hundred thirteen".