13121305132012 has 144 divisors (see below), whose sum is σ = 30758655916800. Its totient is φ = 4829637778560.

The previous prime is 13121305131989. The next prime is 13121305132043. The reversal of 13121305132012 is 21023150312131.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14259958 + ... + 15152194.

It is an arithmetic number, because the mean of its divisors is an integer number (213601777200).

Almost surely, 2^{13121305132012} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13121305132012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15379327958400).

13121305132012 is an abundant number, since it is smaller than the sum of its proper divisors (17637350784788).

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

13121305132012 is a wasteful number, since it uses less digits than its factorization.

13121305132012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892644 (or 892635 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

Adding to 13121305132012 its reverse (21023150312131), we get a palindrome (34144455444143).

The spelling of 13121305132012 in words is "thirteen trillion, one hundred twenty-one billion, three hundred five million, one hundred thirty-two thousand, twelve".