13121121320209 has 8 divisors (see below), whose sum is σ = 15314621845248. Its totient is φ = 11007384450720.

The previous prime is 13121121320191. The next prime is 13121121320261. The reversal of 13121121320209 is 90202312112131.

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

It is not a de Polignac number, because 13121121320209 - 2¹¹ = 13121121318161 is a prime.

It is a super-2 number, since 2×13121121320209² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13121127320209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19940913532 + ... + 19940914189.

It is an arithmetic number, because the mean of its divisors is an integer number (1914327730656).

Almost surely, 2^{13121121320209} is an apocalyptic number.

It is an amenable number.

13121121320209 is a deficient number, since it is larger than the sum of its proper divisors (2193500525039).

13121121320209 is an equidigital number, since it uses as much as digits as its factorization.

13121121320209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39881827775.

The product of its (nonzero) digits is 1296, while the sum is 28.

The spelling of 13121121320209 in words is "thirteen trillion, one hundred twenty-one billion, one hundred twenty-one million, three hundred twenty thousand, two hundred nine".