2213221333 has 4 divisors (see below), whose sum is σ = 2289539340. Its totient is φ = 2136903328.

The previous prime is 2213221271. The next prime is 2213221349. The reversal of 2213221333 is 3331223122.

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 1854421969 + 358799364 = 43063^2 + 18942^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2213221333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2213221033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38158960 + ... + 38159017.

It is an arithmetic number, because the mean of its divisors is an integer number (572384835).

Almost surely, 2^2213221333 is an apocalyptic number.

It is an amenable number.

2213221333 is a deficient number, since it is larger than the sum of its proper divisors (76318007).

2213221333 is an equidigital number, since it uses as much as digits as its factorization.

2213221333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76318006.

The product of its digits is 1296, while the sum is 22.

The square root of 2213221333 is about 47044.8863639822. The cubic root of 2213221333 is about 1303.1916317724.

Adding to 2213221333 its reverse (3331223122), we get a palindrome (5544444455).

The spelling of 2213221333 in words is "two billion, two hundred thirteen million, two hundred twenty-one thousand, three hundred thirty-three".