13121111133313 has 4 divisors (see below), whose sum is σ = 13125431554900. Its totient is φ = 13116790711728.

The previous prime is 13121111133301. The next prime is 13121111133341. The reversal of 13121111133313 is 31333111112131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9090846100609 + 4030265032704 = 3015103^2 + 2007552^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13121111133313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13121111131313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2160206238 + ... + 2160212311.

It is an arithmetic number, because the mean of its divisors is an integer number (3281357888725).

Almost surely, 2^{13121111133313} is an apocalyptic number.

It is an amenable number.

13121111133313 is a deficient number, since it is larger than the sum of its proper divisors (4320421587).

13121111133313 is an equidigital number, since it uses as much as digits as its factorization.

13121111133313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4320421586.

The product of its digits is 486, while the sum is 25.

Adding to 13121111133313 its reverse (31333111112131), we get a palindrome (44454222245444).

The spelling of 13121111133313 in words is "thirteen trillion, one hundred twenty-one billion, one hundred eleven million, one hundred thirty-three thousand, three hundred thirteen".