12404421203 has 4 divisors (see below), whose sum is σ = 12943743888. Its totient is φ = 11865098520.

The previous prime is 12404421163. The next prime is 12404421209. The reversal of 12404421203 is 30212440421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12404421203 - 2⁸ = 12404420947 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 539322661 = 12404421203 / (1 + 2 + 4 + 0 + 4 + 4 + 2 + 1 + 2 + 0 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12404421209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 269661308 + ... + 269661353.

It is an arithmetic number, because the mean of its divisors is an integer number (3235935972).

Almost surely, 2^12404421203 is an apocalyptic number.

12404421203 is a deficient number, since it is larger than the sum of its proper divisors (539322685).

12404421203 is an equidigital number, since it uses as much as digits as its factorization.

12404421203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539322684.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 12404421203 its reverse (30212440421), we get a palindrome (42616861624).

The spelling of 12404421203 in words is "twelve billion, four hundred four million, four hundred twenty-one thousand, two hundred three".