12521429020 has 48 divisors (see below), whose sum is σ = 27824025600. Its totient is φ = 4720092480.

The previous prime is 12521428961. The next prime is 12521429023. The reversal of 12521429020 is 2092412521.

12521429020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 12521429020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12521429023) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 13680 + ... + 158839.

It is an arithmetic number, because the mean of its divisors is an integer number (579667200).

Almost surely, 2^12521429020 is an apocalyptic number.

12521429020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12521429020 is an abundant number, since it is smaller than the sum of its proper divisors (15302596580).

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

12521429020 is a wasteful number, since it uses less digits than its factorization.

12521429020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172738 (or 172736 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The spelling of 12521429020 in words is "twelve billion, five hundred twenty-one million, four hundred twenty-nine thousand, twenty".