13121365133 has 4 divisors (see below), whose sum is σ = 13544635008. Its totient is φ = 12698095260.

The previous prime is 13121365111. The next prime is 13121365181. The reversal of 13121365133 is 33156312131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13121365133 - 2⁶ = 13121365069 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13121365096 and 13121365105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13121365193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211634891 + ... + 211634952.

It is an arithmetic number, because the mean of its divisors is an integer number (3386158752).

Almost surely, 2^13121365133 is an apocalyptic number.

It is an amenable number.

13121365133 is a deficient number, since it is larger than the sum of its proper divisors (423269875).

13121365133 is an equidigital number, since it uses as much as digits as its factorization.

13121365133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423269874.

The product of its digits is 4860, while the sum is 29.

Adding to 13121365133 its reverse (33156312131), we get a palindrome (46277677264).

The spelling of 13121365133 in words is "thirteen billion, one hundred twenty-one million, three hundred sixty-five thousand, one hundred thirty-three".