13121193889512 has 128 divisors (see below), whose sum is σ = 36498010579200. Its totient is φ = 4367705068800.

The previous prime is 13121193889483. The next prime is 13121193889519. The reversal of 13121193889512 is 21598839112131.

13121193889512 is a `hidden beast` number, since 1 + 3 + 1 + 2 + 1 + 19 + 38 + 89 + 512 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (13121193889519) 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 31 ways as a sum of consecutive naturals, for example, 585991837 + ... + 586014227.

It is an arithmetic number, because the mean of its divisors is an integer number (285140707650).

Almost surely, 2^{13121193889512} is an apocalyptic number.

13121193889512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13121193889512 is an abundant number, since it is smaller than the sum of its proper divisors (23376816689688).

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

13121193889512 is a wasteful number, since it uses less digits than its factorization.

13121193889512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26024 (or 26014 counting only the distinct ones).

The product of its digits is 933120, while the sum is 54.

The spelling of 13121193889512 in words is "thirteen trillion, one hundred twenty-one billion, one hundred ninety-three million, eight hundred eighty-nine thousand, five hundred twelve".