12240113243 has 4 divisors (see below), whose sum is σ = 12242252520. Its totient is φ = 12237973968.

The previous prime is 12240113183. The next prime is 12240113299. The reversal of 12240113243 is 34231104221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34231104221 = 41 ⋅834904981.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12240113243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12240113843) 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, 1061033 + ... + 1072506.

It is an arithmetic number, because the mean of its divisors is an integer number (3060563130).

Almost surely, 2^12240113243 is an apocalyptic number.

12240113243 is a deficient number, since it is larger than the sum of its proper divisors (2139277).

12240113243 is an equidigital number, since it uses as much as digits as its factorization.

12240113243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2139276.

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

Adding to 12240113243 its reverse (34231104221), we get a palindrome (46471217464).

The spelling of 12240113243 in words is "twelve billion, two hundred forty million, one hundred thirteen thousand, two hundred forty-three".