13121321243334 has 16 divisors (see below), whose sum is σ = 26340198781680. Its totient is φ = 4357514365280.

The previous prime is 13121321243299. The next prime is 13121321243341. The reversal of 13121321243334 is 43334212312131.

It is a junction number, because it is equal to n+sod(n) for n = 13121321243295 and 13121321243304.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4064843877 + ... + 4064847104.

It is an arithmetic number, because the mean of its divisors is an integer number (1646262423855).

Almost surely, 2^{13121321243334} is an apocalyptic number.

13121321243334 is an abundant number, since it is smaller than the sum of its proper divisors (13218877538346).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13121321243334 is a wasteful number, since it uses less digits than its factorization.

13121321243334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8129691255.

The product of its digits is 31104, while the sum is 33.

Adding to 13121321243334 its reverse (43334212312131), we get a palindrome (56455533555465).

The spelling of 13121321243334 in words is "thirteen trillion, one hundred twenty-one billion, three hundred twenty-one million, two hundred forty-three thousand, three hundred thirty-four".