12433221143 has 12 divisors (see below), whose sum is σ = 14568712992. Its totient is φ = 10579252320.

The previous prime is 12433221137. The next prime is 12433221149. The reversal of 12433221143 is 34112233421.

It is an interprime number because it is at equal distance from previous prime (12433221137) and next prime (12433221149).

It is not a de Polignac number, because 12433221143 - 2⁶ = 12433221079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12433221149) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 919343 + ... + 932768.

It is an arithmetic number, because the mean of its divisors is an integer number (1214059416).

Almost surely, 2^12433221143 is an apocalyptic number.

12433221143 is a deficient number, since it is larger than the sum of its proper divisors (2135491849).

12433221143 is a wasteful number, since it uses less digits than its factorization.

12433221143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1852262 (or 1852255 counting only the distinct ones).

The product of its digits is 3456, while the sum is 26.

Adding to 12433221143 its reverse (34112233421), we get a palindrome (46545454564).

The spelling of 12433221143 in words is "twelve billion, four hundred thirty-three million, two hundred twenty-one thousand, one hundred forty-three".