5000000221 has 2 divisors, whose sum is σ = 5000000222. Its totient is φ = 5000000220.

The previous prime is 5000000179. The next prime is 5000000227. The reversal of 5000000221 is 1220000005.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4094592121 + 905408100 = 63989^2 + 30090^2 .

It is a cyclic number.

It is not a de Polignac number, because 5000000221 - 2²⁵ = 4966445789 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5000000198 and 5000000207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5000000227) 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, 2500000110 + 2500000111.

It is an arithmetic number, because the mean of its divisors is an integer number (2500000111).

Almost surely, 2^5000000221 is an apocalyptic number.

It is an amenable number.

5000000221 is a deficient number, since it is larger than the sum of its proper divisors (1).

5000000221 is an equidigital number, since it uses as much as digits as its factorization.

5000000221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20, while the sum is 10.

The square root of 5000000221 is about 70710.6796813607. The cubic root of 5000000221 is about 1709.9759718703.

Adding to 5000000221 its reverse (1220000005), we get a palindrome (6220000226).

The spelling of 5000000221 in words is "five billion, two hundred twenty-one", and thus it is an aban number.