13203120121 has 8 divisors (see below), whose sum is σ = 13899362400. Its totient is φ = 12507012000.

The previous prime is 13203120109. The next prime is 13203120143. The reversal of 13203120121 is 12102130231.

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

It is a cyclic number.

It is not a de Polignac number, because 13203120121 - 2⁵ = 13203120089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13203120095 and 13203120104.

It is not an unprimeable number, because it can be changed into a prime (13203120101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216246 + ... + 270496.

It is an arithmetic number, because the mean of its divisors is an integer number (1737420300).

Almost surely, 2^13203120121 is an apocalyptic number.

It is an amenable number.

13203120121 is a deficient number, since it is larger than the sum of its proper divisors (696242279).

13203120121 is a wasteful number, since it uses less digits than its factorization.

13203120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67079.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 13203120121 its reverse (12102130231), we get a palindrome (25305250352).

The spelling of 13203120121 in words is "thirteen billion, two hundred three million, one hundred twenty thousand, one hundred twenty-one".