12005121524 has 48 divisors (see below), whose sum is σ = 23376245760. Its totient is φ = 5348523360.

The previous prime is 12005121511. The next prime is 12005121529. The reversal of 12005121524 is 42512150021.

It is a self number, because there is not a number n which added to its sum of digits gives 12005121524.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12005121529) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 894149 + ... + 907475.

It is an arithmetic number, because the mean of its divisors is an integer number (487005120).

Almost surely, 2^12005121524 is an apocalyptic number.

It is an amenable number.

12005121524 is a deficient number, since it is larger than the sum of its proper divisors (11371124236).

12005121524 is a wasteful number, since it uses less digits than its factorization.

12005121524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13748 (or 13746 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 23.

Adding to 12005121524 its reverse (42512150021), we get a palindrome (54517271545).

The spelling of 12005121524 in words is "twelve billion, five million, one hundred twenty-one thousand, five hundred twenty-four".