52122244221 has 12 divisors (see below), whose sum is σ = 75681864960. Its totient is φ = 34566234120.

The previous prime is 52122244199. The next prime is 52122244231. The reversal of 52122244221 is 12244222125.

52122244221 is a `hidden beast` number, since 5 + 2 + 12 + 224 + 422 + 1 = 666.

52122244221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 52122244221 - 2¹⁰ = 52122243197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52122244231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15158911 + ... + 15162348.

It is an arithmetic number, because the mean of its divisors is an integer number (6306822080).

Almost surely, 2^52122244221 is an apocalyptic number.

It is an amenable number.

52122244221 is a deficient number, since it is larger than the sum of its proper divisors (23559620739).

52122244221 is a wasteful number, since it uses less digits than its factorization.

52122244221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30321456 (or 30321453 counting only the distinct ones).

The product of its digits is 5120, while the sum is 27.

Adding to 52122244221 its reverse (12244222125), we get a palindrome (64366466346).

The spelling of 52122244221 in words is "fifty-two billion, one hundred twenty-two million, two hundred forty-four thousand, two hundred twenty-one".