500603252221 has 2 divisors, whose sum is σ = 500603252222. Its totient is φ = 500603252220.

The previous prime is 500603252213. The next prime is 500603252243. The reversal of 500603252221 is 122252306005.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 366545484900 + 134057767321 = 605430^2 + 366139^2 .

It is a cyclic number.

It is not a de Polignac number, because 500603252221 - 2³ = 500603252213 is a prime.

It is a super-2 number, since 2×500603252221² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 500603252221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (500603252321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250301626110 + 250301626111.

It is an arithmetic number, because the mean of its divisors is an integer number (250301626111).

Almost surely, 2^500603252221 is an apocalyptic number.

It is an amenable number.

500603252221 is a deficient number, since it is larger than the sum of its proper divisors (1).

500603252221 is an equidigital number, since it uses as much as digits as its factorization.

500603252221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 500603252221 its reverse (122252306005), we get a palindrome (622855558226).

The spelling of 500603252221 in words is "five hundred billion, six hundred three million, two hundred fifty-two thousand, two hundred twenty-one".