5103212221 has 2 divisors, whose sum is σ = 5103212222. Its totient is φ = 5103212220.

The previous prime is 5103212189. The next prime is 5103212263. The reversal of 5103212221 is 1222123015.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4972224196 + 130988025 = 70514^2 + 11445^2 .

It is a cyclic number.

It is not a de Polignac number, because 5103212221 - 2⁵ = 5103212189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5103212291) 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, 2551606110 + 2551606111.

It is an arithmetic number, because the mean of its divisors is an integer number (2551606111).

Almost surely, 2^5103212221 is an apocalyptic number.

It is an amenable number.

5103212221 is a deficient number, since it is larger than the sum of its proper divisors (1).

5103212221 is an equidigital number, since it uses as much as digits as its factorization.

5103212221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 5103212221 is about 71436.7707906789. The cubic root of 5103212221 is about 1721.6619303706.

Adding to 5103212221 its reverse (1222123015), we get a palindrome (6325335236).

The spelling of 5103212221 in words is "five billion, one hundred three million, two hundred twelve thousand, two hundred twenty-one".