505223522220 has 48 divisors (see below), whose sum is σ = 1428360111360. Its totient is φ = 133418248896.

The previous prime is 505223522197. The next prime is 505223522299. The reversal of 505223522220 is 22225322505.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40869510 + ... + 40881869.

It is an arithmetic number, because the mean of its divisors is an integer number (29757502320).

Almost surely, 2^505223522220 is an apocalyptic number.

It is an amenable number.

505223522220 is an abundant number, since it is smaller than the sum of its proper divisors (923136589140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

505223522220 is a wasteful number, since it uses less digits than its factorization.

505223522220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81751494 (or 81751492 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 30.

Adding to 505223522220 its reverse (22225322505), we get a palindrome (527448844725).

The spelling of 505223522220 in words is "five hundred five billion, two hundred twenty-three million, five hundred twenty-two thousand, two hundred twenty".