12433133421 has 32 divisors (see below), whose sum is σ = 18933180800. Its totient is φ = 8063848080.

The previous prime is 12433133387. The next prime is 12433133441.

It is a happy number.

12433133421 is a `hidden beast` number, since 1 + 2 + 4 + 3 + 313 + 342 + 1 = 666.

12433133421 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 12433133421 - 2¹⁷ = 12433002349 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12433133441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1363086 + ... + 1372176.

It is an arithmetic number, because the mean of its divisors is an integer number (591661900).

Almost surely, 2^12433133421 is an apocalyptic number.

It is an amenable number.

12433133421 is a deficient number, since it is larger than the sum of its proper divisors (6500047379).

12433133421 is an frugal number, since it uses more digits than its factorization.

12433133421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9211 (or 9131 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

The spelling of 12433133421 in words is "twelve billion, four hundred thirty-three million, one hundred thirty-three thousand, four hundred twenty-one".