12421204403 has 8 divisors (see below), whose sum is σ = 12886980480. Its totient is φ = 11959496640.

The previous prime is 12421204319. The next prime is 12421204409. The reversal of 12421204403 is 30440212421.

12421204403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12421204403 - 2¹⁶ = 12421138867 is a prime.

It is a super-2 number, since 2×12421204403² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12421204409) 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 7 ways as a sum of consecutive naturals, for example, 1010858 + ... + 1023071.

It is an arithmetic number, because the mean of its divisors is an integer number (1610872560).

Almost surely, 2^12421204403 is an apocalyptic number.

12421204403 is a deficient number, since it is larger than the sum of its proper divisors (465776077).

12421204403 is a wasteful number, since it uses less digits than its factorization.

12421204403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2034157.

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

Adding to 12421204403 its reverse (30440212421), we get a palindrome (42861416824).

The spelling of 12421204403 in words is "twelve billion, four hundred twenty-one million, two hundred four thousand, four hundred three".