2808300221 has 2 divisors, whose sum is σ = 2808300222. Its totient is φ = 2808300220.

The previous prime is 2808300217. The next prime is 2808300247. The reversal of 2808300221 is 1220038082.

It is an a-pointer prime, because the next prime (2808300247) can be obtained adding 2808300221 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2266807321 + 541492900 = 47611^2 + 23270^2 .

It is a cyclic number.

It is not a de Polignac number, because 2808300221 - 2² = 2808300217 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2808300211) 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 as a sum of consecutive naturals, namely, 1404150110 + 1404150111.

It is an arithmetic number, because the mean of its divisors is an integer number (1404150111).

Almost surely, 2^2808300221 is an apocalyptic number.

It is an amenable number.

2808300221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2808300221 is an equidigital number, since it uses as much as digits as its factorization.

2808300221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 2808300221 is about 52993.3979001158. The cubic root of 2808300221 is about 1410.8510900466.

The spelling of 2808300221 in words is "two billion, eight hundred eight million, three hundred thousand, two hundred twenty-one".