12534521312012 has 144 divisors (see below), whose sum is σ = 26686411164000. Its totient is φ = 5129822638080.

The previous prime is 12534521312009. The next prime is 12534521312051. The reversal of 12534521312012 is 21021312543521.

12534521312012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12534521312012² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12534521312012.

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, 936733562 + ... + 936746942.

It is an arithmetic number, because the mean of its divisors is an integer number (185322299750).

Almost surely, 2^{12534521312012} 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 12534521312012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13343205582000).

12534521312012 is an abundant number, since it is smaller than the sum of its proper divisors (14151889851988).

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

12534521312012 is a wasteful number, since it uses less digits than its factorization.

12534521312012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15224 (or 15215 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

Adding to 12534521312012 its reverse (21021312543521), we get a palindrome (33555833855533).

The spelling of 12534521312012 in words is "twelve trillion, five hundred thirty-four billion, five hundred twenty-one million, three hundred twelve thousand, twelve".