2130303221 has 2 divisors, whose sum is σ = 2130303222. Its totient is φ = 2130303220.

The previous prime is 2130303187. The next prime is 2130303239. The reversal of 2130303221 is 1223030312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1937232196 + 193071025 = 44014^2 + 13895^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2130303221 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 2130303221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2130303251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065151610 + 1065151611.

It is an arithmetic number, because the mean of its divisors is an integer number (1065151611).

Almost surely, 2^2130303221 is an apocalyptic number.

It is an amenable number.

2130303221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2130303221 is an equidigital number, since it uses as much as digits as its factorization.

2130303221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 2130303221 is about 46155.2079509994. The cubic root of 2130303221 is about 1286.7094029120.

Adding to 2130303221 its reverse (1223030312), we get a palindrome (3353333533).

The spelling of 2130303221 in words is "two billion, one hundred thirty million, three hundred three thousand, two hundred twenty-one".