510550412221 has 4 divisors (see below), whose sum is σ = 514447743744. Its totient is φ = 506653080700.

The previous prime is 510550412191. The next prime is 510550412231. The reversal of 510550412221 is 122214055015.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 510550412221 - 2⁵ = 510550412189 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 510550412221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (510550412231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1948665565 + ... + 1948665826.

It is an arithmetic number, because the mean of its divisors is an integer number (128611935936).

Almost surely, 2^510550412221 is an apocalyptic number.

It is an amenable number.

510550412221 is a deficient number, since it is larger than the sum of its proper divisors (3897331523).

510550412221 is a wasteful number, since it uses less digits than its factorization.

510550412221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3897331522.

The product of its (nonzero) digits is 4000, while the sum is 28.

Adding to 510550412221 its reverse (122214055015), we get a palindrome (632764467236).

The spelling of 510550412221 in words is "five hundred ten billion, five hundred fifty million, four hundred twelve thousand, two hundred twenty-one".