2217330281 has 4 divisors (see below), whose sum is σ = 2347761492. Its totient is φ = 2086899072.

The previous prime is 2217330277. The next prime is 2217330289. The reversal of 2217330281 is 1820337122.

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 1974469225 + 242861056 = 44435^2 + 15584^2 .

It is a cyclic number.

It is not a de Polignac number, because 2217330281 - 2² = 2217330277 is a prime.

It is a super-2 number, since 2×2217330281² = 9833107150079077922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2217330289) 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, 65215580 + ... + 65215613.

It is an arithmetic number, because the mean of its divisors is an integer number (586940373).

Almost surely, 2^2217330281 is an apocalyptic number.

It is an amenable number.

2217330281 is a deficient number, since it is larger than the sum of its proper divisors (130431211).

2217330281 is a wasteful number, since it uses less digits than its factorization.

2217330281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130431210.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 2217330281 is about 47088.5366198611. The cubic root of 2217330281 is about 1303.9976117565.

The spelling of 2217330281 in words is "two billion, two hundred seventeen million, three hundred thirty thousand, two hundred eighty-one".