13121340432112 has 40 divisors (see below), whose sum is σ = 29193412930560. Its totient is φ = 5650337983680.

The previous prime is 13121340432041. The next prime is 13121340432121. The reversal of 13121340432112 is 21123404312131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1961919568 + ... + 1961926255.

It is an arithmetic number, because the mean of its divisors is an integer number (729835323264).

Almost surely, 2^{13121340432112} is an apocalyptic number.

It is an amenable number.

13121340432112 is an abundant number, since it is smaller than the sum of its proper divisors (16072072498448).

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

13121340432112 is a wasteful number, since it uses less digits than its factorization.

13121340432112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3923845861 (or 3923845855 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

Adding to 13121340432112 its reverse (21123404312131), we get a palindrome (34244744744243).

The spelling of 13121340432112 in words is "thirteen trillion, one hundred twenty-one billion, three hundred forty million, four hundred thirty-two thousand, one hundred twelve".