2320320221 has 2 divisors, whose sum is σ = 2320320222. Its totient is φ = 2320320220.

The previous prime is 2320320203. The next prime is 2320320227. The reversal of 2320320221 is 1220230232.

2320320221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1588022500 + 732297721 = 39850^2 + 27061^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2320320221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2320320221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2320320227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1160160110 + 1160160111.

It is an arithmetic number, because the mean of its divisors is an integer number (1160160111).

Almost surely, 2^2320320221 is an apocalyptic number.

It is an amenable number.

2320320221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2320320221 is an equidigital number, since it uses as much as digits as its factorization.

2320320221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 2320320221 is about 48169.7023137989. The cubic root of 2320320221 is about 1323.8820941804.

Adding to 2320320221 its reverse (1220230232), we get a palindrome (3540550453).

The spelling of 2320320221 in words is "two billion, three hundred twenty million, three hundred twenty thousand, two hundred twenty-one".