13320553121 has 4 divisors (see below), whose sum is σ = 13324653744. Its totient is φ = 13316452500.

The previous prime is 13320553073. The next prime is 13320553189. The reversal of 13320553121 is 12135502331.

13320553121 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12135502331 = 19 ⋅638710649.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13320553121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13320552121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2045435 + ... + 2051936.

It is an arithmetic number, because the mean of its divisors is an integer number (3331163436).

Almost surely, 2^13320553121 is an apocalyptic number.

It is an amenable number.

13320553121 is a deficient number, since it is larger than the sum of its proper divisors (4100623).

13320553121 is an equidigital number, since it uses as much as digits as its factorization.

13320553121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4100622.

The product of its (nonzero) digits is 2700, while the sum is 26.

The spelling of 13320553121 in words is "thirteen billion, three hundred twenty million, five hundred fifty-three thousand, one hundred twenty-one".