13121434043 has 2 divisors, whose sum is σ = 13121434044. Its totient is φ = 13121434042.

The previous prime is 13121434021. The next prime is 13121434049. The reversal of 13121434043 is 34043412131.

It is a happy number.

13121434043 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (34043412131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13121434043 - 2¹⁰ = 13121433019 is a prime.

It is not a weakly prime, because it can be changed into another prime (13121434049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6560717021 + 6560717022.

It is an arithmetic number, because the mean of its divisors is an integer number (6560717022).

Almost surely, 2^13121434043 is an apocalyptic number.

13121434043 is a deficient number, since it is larger than the sum of its proper divisors (1).

13121434043 is an equidigital number, since it uses as much as digits as its factorization.

13121434043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 13121434043 its reverse (34043412131), we get a palindrome (47164846174).

The spelling of 13121434043 in words is "thirteen billion, one hundred twenty-one million, four hundred thirty-four thousand, forty-three".