2221320113 has 4 divisors (see below), whose sum is σ = 2351986020. Its totient is φ = 2090654208.

The previous prime is 2221320109. The next prime is 2221320149. The reversal of 2221320113 is 3110231222.

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 1894686784 + 326633329 = 43528^2 + 18073^2 .

It is a cyclic number.

It is not a de Polignac number, because 2221320113 - 2² = 2221320109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 130665889 = 2221320113 / (2 + 2 + 2 + 1 + 3 + 2 + 0 + 1 + 1 + 3).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2221320091 and 2221320100.

It is not an unprimeable number, because it can be changed into a prime (2221320103) 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, 65332928 + ... + 65332961.

It is an arithmetic number, because the mean of its divisors is an integer number (587996505).

Almost surely, 2^2221320113 is an apocalyptic number.

It is an amenable number.

2221320113 is a deficient number, since it is larger than the sum of its proper divisors (130665907).

2221320113 is a wasteful number, since it uses less digits than its factorization.

2221320113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130665906.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2221320113 is about 47130.8827946178. The cubic root of 2221320113 is about 1304.7792745797.

Adding to 2221320113 its reverse (3110231222), we get a palindrome (5331551335).

The spelling of 2221320113 in words is "two billion, two hundred twenty-one million, three hundred twenty thousand, one hundred thirteen".