12201143243 has 4 divisors (see below), whose sum is σ = 12228936720. Its totient is φ = 12173349768.

The previous prime is 12201143209. The next prime is 12201143257. The reversal of 12201143243 is 34234110221.

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 12201143243 - 2⁶ = 12201143179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12201143263) 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, 13896080 + ... + 13896957.

It is an arithmetic number, because the mean of its divisors is an integer number (3057234180).

Almost surely, 2^12201143243 is an apocalyptic number.

12201143243 is a deficient number, since it is larger than the sum of its proper divisors (27793477).

12201143243 is an equidigital number, since it uses as much as digits as its factorization.

12201143243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27793476.

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

Adding to 12201143243 its reverse (34234110221), we get a palindrome (46435253464).

The spelling of 12201143243 in words is "twelve billion, two hundred one million, one hundred forty-three thousand, two hundred forty-three".