12613121031105 has 96 divisors (see below), whose sum is σ = 25218927951360. Its totient is φ = 5712448665600.

The previous prime is 12613121031103. The next prime is 12613121031109. The reversal of 12613121031105 is 50113012131621.

12613121031105 is a `hidden beast` number, since 1 + 2 + 6 + 131 + 210 + 311 + 0 + 5 = 666.

It is not a de Polignac number, because 12613121031105 - 2¹ = 12613121031103 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12613121031103) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 17386281 + ... + 18097209.

It is an arithmetic number, because the mean of its divisors is an integer number (262697166160).

Almost surely, 2^{12613121031105} is an apocalyptic number.

12613121031105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12613121031105 is a deficient number, since it is larger than the sum of its proper divisors (12605806920255).

12613121031105 is a wasteful number, since it uses less digits than its factorization.

12613121031105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711471 (or 711468 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

Adding to 12613121031105 its reverse (50113012131621), we get a palindrome (62726133162726).

The spelling of 12613121031105 in words is "twelve trillion, six hundred thirteen billion, one hundred twenty-one million, thirty-one thousand, one hundred five".