12222312143 has 4 divisors (see below), whose sum is σ = 12222768000. Its totient is φ = 12221856288.

The previous prime is 12222312103. The next prime is 12222312149. The reversal of 12222312143 is 34121322221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34121322221 = 7 ⋅4874474603.

It is a cyclic number.

It is not a de Polignac number, because 12222312143 - 2¹² = 12222308047 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 (12222312149) 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, 185018 + ... + 242231.

It is an arithmetic number, because the mean of its divisors is an integer number (3055692000).

Almost surely, 2^12222312143 is an apocalyptic number.

12222312143 is a deficient number, since it is larger than the sum of its proper divisors (455857).

12222312143 is an equidigital number, since it uses as much as digits as its factorization.

12222312143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455856.

The product of its digits is 1152, while the sum is 23.

Adding to 12222312143 its reverse (34121322221), we get a palindrome (46343634364).

The spelling of 12222312143 in words is "twelve billion, two hundred twenty-two million, three hundred twelve thousand, one hundred forty-three".