505224343221 has 16 divisors (see below), whose sum is σ = 768123889344. Its totient is φ = 292618623744.

The previous prime is 505224343177. The next prime is 505224343259. The reversal of 505224343221 is 122343422505.

It is not a de Polignac number, because 505224343221 - 2⁷ = 505224343093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505224393221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 381013171 + ... + 381014496.

It is an arithmetic number, because the mean of its divisors is an integer number (48007743084).

Almost surely, 2^505224343221 is an apocalyptic number.

505224343221 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

505224343221 is a deficient number, since it is larger than the sum of its proper divisors (262899546123).

505224343221 is a wasteful number, since it uses less digits than its factorization.

505224343221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762027700.

The product of its (nonzero) digits is 57600, while the sum is 33.

Adding to 505224343221 its reverse (122343422505), we get a palindrome (627567765726).

The spelling of 505224343221 in words is "five hundred five billion, two hundred twenty-four million, three hundred forty-three thousand, two hundred twenty-one".