12243032400 has 120 divisors (see below), whose sum is σ = 39505310784. Its totient is φ = 3240934400.

The previous prime is 12243032381. The next prime is 12243032407. The reversal of 12243032400 is 423034221.

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12243032407) 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 23 ways as a sum of consecutive naturals, for example, 127165 + ... + 201635.

Almost surely, 2^12243032400 is an apocalyptic number.

12243032400 is a gapful number since it is divisible by the number (10) 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 12243032400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19752655392).

12243032400 is an abundant number, since it is smaller than the sum of its proper divisors (27262278384).

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

12243032400 is a wasteful number, since it uses less digits than its factorization.

12243032400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74629 (or 74618 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 12243032400 its reverse (423034221), we get a palindrome (12666066621).

The spelling of 12243032400 in words is "twelve billion, two hundred forty-three million, thirty-two thousand, four hundred".