13331312121 has 8 divisors (see below), whose sum is σ = 18255490624. Its totient is φ = 8647337520.

The previous prime is 13331312117. The next prime is 13331312129. The reversal of 13331312121 is 12121313331.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13331312121 - 2² = 13331312117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13331312129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60050845 + ... + 60051066.

It is an arithmetic number, because the mean of its divisors is an integer number (2281936328).

Almost surely, 2^13331312121 is an apocalyptic number.

It is an amenable number.

13331312121 is a deficient number, since it is larger than the sum of its proper divisors (4924178503).

13331312121 is a wasteful number, since it uses less digits than its factorization.

13331312121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120101951.

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

Adding to 13331312121 its reverse (12121313331), we get a palindrome (25452625452).

The spelling of 13331312121 in words is "thirteen billion, three hundred thirty-one million, three hundred twelve thousand, one hundred twenty-one".