13105121291 has 2 divisors, whose sum is σ = 13105121292. Its totient is φ = 13105121290.

The previous prime is 13105121273. The next prime is 13105121303. The reversal of 13105121291 is 19212150131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13105121291 - 2¹⁰ = 13105120267 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13105121291.

It is not a weakly prime, because it can be changed into another prime (13105121221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6552560645 + 6552560646.

It is an arithmetic number, because the mean of its divisors is an integer number (6552560646).

Almost surely, 2^13105121291 is an apocalyptic number.

13105121291 is a deficient number, since it is larger than the sum of its proper divisors (1).

13105121291 is an equidigital number, since it uses as much as digits as its factorization.

13105121291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 26.

The spelling of 13105121291 in words is "thirteen billion, one hundred five million, one hundred twenty-one thousand, two hundred ninety-one".