2310222221 has 2 divisors, whose sum is σ = 2310222222. Its totient is φ = 2310222220.

The previous prime is 2310222197. The next prime is 2310222241. The reversal of 2310222221 is 1222220132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2264808100 + 45414121 = 47590^2 + 6739^2 .

It is a cyclic number.

It is not a de Polignac number, because 2310222221 - 2¹⁸ = 2309960077 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 2310222221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2310222241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1155111110 + 1155111111.

It is an arithmetic number, because the mean of its divisors is an integer number (1155111111).

Almost surely, 2^2310222221 is an apocalyptic number.

It is an amenable number.

2310222221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2310222221 is an equidigital number, since it uses as much as digits as its factorization.

2310222221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2310222221 is about 48064.7711010882. The cubic root of 2310222221 is about 1321.9587961872.

Adding to 2310222221 its reverse (1222220132), we get a palindrome (3532442353).

The spelling of 2310222221 in words is "two billion, three hundred ten million, two hundred twenty-two thousand, two hundred twenty-one".