13322213745521 has 4 divisors (see below), whose sum is σ = 13322914601700. Its totient is φ = 13321512889344.

The previous prime is 13322213745487. The next prime is 13322213745523. The reversal of 13322213745521 is 12554731222331.

13322213745521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10280590544896 + 3041623200625 = 3206336^2 + 1744025^2 .

It is a cyclic number.

It is not a de Polignac number, because 13322213745521 - 2⁶ = 13322213745457 is a prime.

It is a super-3 number, since 3×13322213745521³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13322213745523) 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, 350399576 + ... + 350437593.

It is an arithmetic number, because the mean of its divisors is an integer number (3330728650425).

Almost surely, 2^{13322213745521} is an apocalyptic number.

It is an amenable number.

13322213745521 is a deficient number, since it is larger than the sum of its proper divisors (700856179).

13322213745521 is an equidigital number, since it uses as much as digits as its factorization.

13322213745521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700856178.

The product of its digits is 302400, while the sum is 41.

Adding to 13322213745521 its reverse (12554731222331), we get a palindrome (25876944967852).

The spelling of 13322213745521 in words is "thirteen trillion, three hundred twenty-two billion, two hundred thirteen million, seven hundred forty-five thousand, five hundred twenty-one".