505321221223 has 32 divisors (see below), whose sum is σ = 658685091456. Its totient is φ = 376200695808.

The previous prime is 505321221221. The next prime is 505321221233. The reversal of 505321221223 is 322122123505.

It is not a de Polignac number, because 505321221223 - 2¹ = 505321221221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 505321221191 and 505321221200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505321221221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6385365 + ... + 6464017.

It is an arithmetic number, because the mean of its divisors is an integer number (20583909108).

Almost surely, 2^505321221223 is an apocalyptic number.

505321221223 is a deficient number, since it is larger than the sum of its proper divisors (153363870233).

505321221223 is a wasteful number, since it uses less digits than its factorization.

505321221223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82843.

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

Adding to 505321221223 its reverse (322122123505), we get a palindrome (827443344728).

The spelling of 505321221223 in words is "five hundred five billion, three hundred twenty-one million, two hundred twenty-one thousand, two hundred twenty-three".