12513240012 has 192 divisors, whose sum is σ = 37056481280. Its totient is φ = 3197988864.

The previous prime is 12513239987. The next prime is 12513240013. The reversal of 12513240012 is 21004231521.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (12513240013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13615689 + ... + 13616607.

Almost surely, 2^12513240012 is an apocalyptic number.

12513240012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12513240012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18528240640).

12513240012 is an abundant number, since it is smaller than the sum of its proper divisors (24543241268).

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

12513240012 is a wasteful number, since it uses less digits than its factorization.

12513240012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1320 (or 1318 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 12513240012 its reverse (21004231521), we get a palindrome (33517471533).

The spelling of 12513240012 in words is "twelve billion, five hundred thirteen million, two hundred forty thousand, twelve".