12200243243 has 4 divisors (see below), whose sum is σ = 12232098048. Its totient is φ = 12168388440.

The previous prime is 12200243227. The next prime is 12200243249. The reversal of 12200243243 is 34234200221.

12200243243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34234200221 = 13 ⋅2633400017.

It is a cyclic number.

It is not a de Polignac number, because 12200243243 - 2⁴ = 12200243227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12200243249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15926828 + ... + 15927593.

It is an arithmetic number, because the mean of its divisors is an integer number (3058024512).

Almost surely, 2^12200243243 is an apocalyptic number.

12200243243 is a deficient number, since it is larger than the sum of its proper divisors (31854805).

12200243243 is an equidigital number, since it uses as much as digits as its factorization.

12200243243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31854804.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 12200243243 its reverse (34234200221), we get a palindrome (46434443464).

The spelling of 12200243243 in words is "twelve billion, two hundred million, two hundred forty-three thousand, two hundred forty-three".