12240321143 has 4 divisors (see below), whose sum is σ = 12260963088. Its totient is φ = 12219679200.

The previous prime is 12240321109. The next prime is 12240321157. The reversal of 12240321143 is 34112304221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12240321143 - 2⁸ = 12240320887 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 (12240321043) 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, 10320083 + ... + 10321268.

It is an arithmetic number, because the mean of its divisors is an integer number (3065240772).

Almost surely, 2^12240321143 is an apocalyptic number.

12240321143 is a deficient number, since it is larger than the sum of its proper divisors (20641945).

12240321143 is an equidigital number, since it uses as much as digits as its factorization.

12240321143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20641944.

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

Adding to 12240321143 its reverse (34112304221), we get a palindrome (46352625364).

The spelling of 12240321143 in words is "twelve billion, two hundred forty million, three hundred twenty-one thousand, one hundred forty-three".