12520351412 has 24 divisors (see below), whose sum is σ = 22562268960. Its totient is φ = 6074883360.

The previous prime is 12520351289. The next prime is 12520351427. The reversal of 12520351412 is 21415302521.

12520351412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55514 + ... + 167697.

It is an arithmetic number, because the mean of its divisors is an integer number (940094540).

Almost surely, 2^12520351412 is an apocalyptic number.

It is an amenable number.

12520351412 is a deficient number, since it is larger than the sum of its proper divisors (10041917548).

12520351412 is a wasteful number, since it uses less digits than its factorization.

12520351412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223631 (or 223629 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 12520351412 its reverse (21415302521), we get a palindrome (33935653933).

The spelling of 12520351412 in words is "twelve billion, five hundred twenty million, three hundred fifty-one thousand, four hundred twelve".