12520331012 has 12 divisors (see below), whose sum is σ = 25040662080. Its totient is φ = 5365856136.

The previous prime is 12520331009. The next prime is 12520331017. The reversal of 12520331012 is 21013302521.

12520331012 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (12520331017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223577312 + ... + 223577367.

It is an arithmetic number, because the mean of its divisors is an integer number (2086721840).

Almost surely, 2^12520331012 is an apocalyptic number.

It is an amenable number.

12520331012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12520331012 is a wasteful number, since it uses less digits than its factorization.

12520331012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447154690 (or 447154688 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

Adding to 12520331012 its reverse (21013302521), we get a palindrome (33533633533).

The spelling of 12520331012 in words is "twelve billion, five hundred twenty million, three hundred thirty-one thousand, twelve".