13453533121 has 4 divisors (see below), whose sum is σ = 15375466432. Its totient is φ = 11531599812.

The previous prime is 13453533113. The next prime is 13453533127. The reversal of 13453533121 is 12133535431.

It is a happy number.

13453533121 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.

It is a cyclic number.

It is not a de Polignac number, because 13453533121 - 2³ = 13453533113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13453533127) 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, 960966645 + ... + 960966658.

It is an arithmetic number, because the mean of its divisors is an integer number (3843866608).

Almost surely, 2^13453533121 is an apocalyptic number.

It is an amenable number.

13453533121 is a deficient number, since it is larger than the sum of its proper divisors (1921933311).

13453533121 is an equidigital number, since it uses as much as digits as its factorization.

13453533121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1921933310.

The product of its digits is 16200, while the sum is 31.

The spelling of 13453533121 in words is "thirteen billion, four hundred fifty-three million, five hundred thirty-three thousand, one hundred twenty-one".