3113220221 has 2 divisors, whose sum is σ = 3113220222. Its totient is φ = 3113220220.

The previous prime is 3113220203. The next prime is 3113220247. The reversal of 3113220221 is 1220223113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3081804196 + 31416025 = 55514^2 + 5605^2 .

It is a cyclic number.

It is not a de Polignac number, because 3113220221 - 2¹⁴ = 3113203837 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3113220221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3113222221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1556610110 + 1556610111.

It is an arithmetic number, because the mean of its divisors is an integer number (1556610111).

Almost surely, 2^3113220221 is an apocalyptic number.

It is an amenable number.

3113220221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3113220221 is an equidigital number, since it uses as much as digits as its factorization.

3113220221 is an odious number, because the sum of its binary digits is odd.

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

The square root of 3113220221 is about 55796.2384126385. The cubic root of 3113220221 is about 1460.1695276030.

Adding to 3113220221 its reverse (1220223113), we get a palindrome (4333443334).

The spelling of 3113220221 in words is "three billion, one hundred thirteen million, two hundred twenty thousand, two hundred twenty-one".