12421203432 has 64 divisors (see below), whose sum is σ = 34381670400. Its totient is φ = 3707816640.

The previous prime is 12421203413. The next prime is 12421203439. The reversal of 12421203432 is 23430212421.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (12421203439) 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, 333432 + ... + 368807.

It is an arithmetic number, because the mean of its divisors is an integer number (537213600).

Almost surely, 2^12421203432 is an apocalyptic number.

12421203432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12421203432 is an abundant number, since it is smaller than the sum of its proper divisors (21960466968).

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

12421203432 is a wasteful number, since it uses less digits than its factorization.

12421203432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702326 (or 702322 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 12421203432 its reverse (23430212421), we get a palindrome (35851415853).

The spelling of 12421203432 in words is "twelve billion, four hundred twenty-one million, two hundred three thousand, four hundred thirty-two".