13352531224221 has 18 divisors (see below), whose sum is σ = 22435885799262. Its totient is φ = 7630017842160.

The previous prime is 13352531224199. The next prime is 13352531224243. The reversal of 13352531224221 is 12242213525331.

13352531224221 is a `hidden beast` number, since 1 + 3 + 3 + 525 + 3 + 122 + 4 + 2 + 2 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (13352531224199) and next prime (13352531224243).

It can be written as a sum of positive squares in only one way, i.e., 12012192471321 + 1340338752900 = 3465861^2 + 1157730^2 .

It is not a de Polignac number, because 13352531224221 - 2¹⁴ = 13352531207837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13352531224261) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 15138923850 + ... + 15138924731.

It is an arithmetic number, because the mean of its divisors is an integer number (1246438099959).

Almost surely, 2^{13352531224221} is an apocalyptic number.

It is an amenable number.

13352531224221 is a deficient number, since it is larger than the sum of its proper divisors (9083354575041).

13352531224221 is a wasteful number, since it uses less digits than its factorization.

13352531224221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30277848601 (or 30277848591 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

Adding to 13352531224221 its reverse (12242213525331), we get a palindrome (25594744749552).

The spelling of 13352531224221 in words is "thirteen trillion, three hundred fifty-two billion, five hundred thirty-one million, two hundred twenty-four thousand, two hundred twenty-one".