12421203433 has 4 divisors (see below), whose sum is σ = 12427571968. Its totient is φ = 12414834900.

The previous prime is 12421203413. The next prime is 12421203439. The reversal of 12421203433 is 33430212421.

12421203433 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33430212421 = 2927 ⋅11421323.

It is a cyclic number.

It is not a de Polignac number, because 12421203433 - 2⁹ = 12421202921 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12421203398 and 12421203407.

It is not an unprimeable number, because it can be changed into a prime (12421203439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3181341 + ... + 3185242.

It is an arithmetic number, because the mean of its divisors is an integer number (3106892992).

Almost surely, 2^12421203433 is an apocalyptic number.

It is an amenable number.

12421203433 is a deficient number, since it is larger than the sum of its proper divisors (6368535).

12421203433 is an equidigital number, since it uses as much as digits as its factorization.

12421203433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6368534.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 12421203433 its reverse (33430212421), we get a palindrome (45851415854).

The spelling of 12421203433 in words is "twelve billion, four hundred twenty-one million, two hundred three thousand, four hundred thirty-three".