505321221233 has 2 divisors, whose sum is σ = 505321221234. Its totient is φ = 505321221232.

The previous prime is 505321221221. The next prime is 505321221289. The reversal of 505321221233 is 332122123505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 413356413184 + 91964808049 = 642928^2 + 303257^2 .

It is a cyclic number.

It is not a de Polignac number, because 505321221233 - 2⁸ = 505321220977 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 505321221196 and 505321221205.

It is not a weakly prime, because it can be changed into another prime (505321220233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252660610616 + 252660610617.

It is an arithmetic number, because the mean of its divisors is an integer number (252660610617).

Almost surely, 2^505321221233 is an apocalyptic number.

It is an amenable number.

505321221233 is a deficient number, since it is larger than the sum of its proper divisors (1).

505321221233 is an equidigital number, since it uses as much as digits as its factorization.

505321221233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 29.

Adding to 505321221233 its reverse (332122123505), we get a palindrome (837443344738).

The spelling of 505321221233 in words is "five hundred five billion, three hundred twenty-one million, two hundred twenty-one thousand, two hundred thirty-three".