13121321126 has 8 divisors (see below), whose sum is σ = 19682685120. Its totient is φ = 6560426088.

The previous prime is 13121321111. The next prime is 13121321153. The reversal of 13121321126 is 62112312131.

13121321126 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×13121321126² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 36041 + ... + 165956.

It is an arithmetic number, because the mean of its divisors is an integer number (2460335640).

Almost surely, 2^13121321126 is an apocalyptic number.

13121321126 is a deficient number, since it is larger than the sum of its proper divisors (6561363994).

13121321126 is a wasteful number, since it uses less digits than its factorization.

13121321126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234478.

The product of its digits is 432, while the sum is 23.

Adding to 13121321126 its reverse (62112312131), we get a palindrome (75233633257).

The spelling of 13121321126 in words is "thirteen billion, one hundred twenty-one million, three hundred twenty-one thousand, one hundred twenty-six".