12421001200 has 30 divisors (see below), whose sum is σ = 29841456344. Its totient is φ = 4968400320.

The previous prime is 12421001123. The next prime is 12421001207. The reversal of 12421001200 is 210012421.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12421001207) 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 5 ways as a sum of consecutive naturals, for example, 15525852 + ... + 15526651.

Almost surely, 2^12421001200 is an apocalyptic number.

12421001200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12421001200 is an abundant number, since it is smaller than the sum of its proper divisors (17420455144).

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

12421001200 is a wasteful number, since it uses less digits than its factorization.

12421001200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31052521 (or 31052510 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 12421001200 its reverse (210012421), we get a palindrome (12631013621).

The spelling of 12421001200 in words is "twelve billion, four hundred twenty-one million, one thousand, two hundred".