12012550424 has 64 divisors (see below), whose sum is σ = 27113356800. Its totient is φ = 4874148864.

The previous prime is 12012550357. The next prime is 12012550427. The reversal of 12012550424 is 42405521021.

It is a junction number, because it is equal to n+sod(n) for n = 12012550393 and 12012550402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012550427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2415989 + ... + 2420955.

It is an arithmetic number, because the mean of its divisors is an integer number (423646200).

Almost surely, 2^12012550424 is an apocalyptic number.

12012550424 is a gapful number since it is divisible by the number (14) 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 12012550424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13556678400).

12012550424 is an abundant number, since it is smaller than the sum of its proper divisors (15100806376).

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

12012550424 is a wasteful number, since it uses less digits than its factorization.

12012550424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7272 (or 7268 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

The spelling of 12012550424 in words is "twelve billion, twelve million, five hundred fifty thousand, four hundred twenty-four".