13131203120121 has 16 divisors (see below), whose sum is σ = 17916463769600. Its totient is φ = 8550062211600.

The previous prime is 13131203120093. The next prime is 13131203120141. The reversal of 13131203120121 is 12102130213131.

It is not a de Polignac number, because 13131203120121 - 2²¹ = 13131201022969 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13131203120141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 635821 + ... + 5163978.

It is an arithmetic number, because the mean of its divisors is an integer number (1119778985600).

Almost surely, 2^{13131203120121} is an apocalyptic number.

It is an amenable number.

13131203120121 is a deficient number, since it is larger than the sum of its proper divisors (4785260649479).

13131203120121 is a wasteful number, since it uses less digits than its factorization.

13131203120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5817396.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 13131203120121 its reverse (12102130213131), we get a palindrome (25233333333252).

The spelling of 13131203120121 in words is "thirteen trillion, one hundred thirty-one billion, two hundred three million, one hundred twenty thousand, one hundred twenty-one".