12005124450 has 48 divisors (see below), whose sum is σ = 32479322976. Its totient is φ = 2910332800.

The previous prime is 12005124437. The next prime is 12005124457. The reversal of 12005124450 is 5442150021.

It is a self number, because there is not a number n which added to its sum of digits gives 12005124450.

It is not an unprimeable number, because it can be changed into a prime (12005124457) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3636267 + ... + 3639566.

It is an arithmetic number, because the mean of its divisors is an integer number (676652562).

Almost surely, 2^12005124450 is an apocalyptic number.

12005124450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12005124450 is an abundant number, since it is smaller than the sum of its proper divisors (20474198526).

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

12005124450 is a wasteful number, since it uses less digits than its factorization.

12005124450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7275859 (or 7275854 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

Adding to 12005124450 its reverse (5442150021), we get a palindrome (17447274471).

The spelling of 12005124450 in words is "twelve billion, five million, one hundred twenty-four thousand, four hundred fifty".