13331123121 has 32 divisors (see below), whose sum is σ = 19828247040. Its totient is φ = 7917467904.

The previous prime is 13331123093. The next prime is 13331123131. The reversal of 13331123121 is 12132113331.

It is a happy number.

13331123121 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 13331123121 - 2²⁹ = 12794252209 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13331123131) 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 31 ways as a sum of consecutive naturals, for example, 1237866 + ... + 1248588.

It is an arithmetic number, because the mean of its divisors is an integer number (619632720).

Almost surely, 2^13331123121 is an apocalyptic number.

It is an amenable number.

13331123121 is a deficient number, since it is larger than the sum of its proper divisors (6497123919).

13331123121 is a wasteful number, since it uses less digits than its factorization.

13331123121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12045.

The product of its digits is 324, while the sum is 21.

Adding to 13331123121 its reverse (12132113331), we get a palindrome (25463236452).

The spelling of 13331123121 in words is "thirteen billion, three hundred thirty-one million, one hundred twenty-three thousand, one hundred twenty-one".