13121121312194 has 16 divisors (see below), whose sum is σ = 22493804623488. Its totient is φ = 5623224254592.

The previous prime is 13121121312193. The next prime is 13121121312253. The reversal of 13121121312194 is 49121312112131.

It is a self number, because there is not a number n which added to its sum of digits gives 13121121312194.

It is not an unprimeable number, because it can be changed into a prime (13121121312193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8733614 + ... + 10125129.

It is an arithmetic number, because the mean of its divisors is an integer number (1405862788968).

Almost surely, 2^{13121121312194} is an apocalyptic number.

13121121312194 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

13121121312194 is a deficient number, since it is larger than the sum of its proper divisors (9372683311294).

13121121312194 is a wasteful number, since it uses less digits than its factorization.

13121121312194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18908449.

The product of its digits is 2592, while the sum is 32.

The spelling of 13121121312194 in words is "thirteen trillion, one hundred twenty-one billion, one hundred twenty-one million, three hundred twelve thousand, one hundred ninety-four".