12211324243 has 4 divisors (see below), whose sum is σ = 12742251408. Its totient is φ = 11680397080.

The previous prime is 12211324241. The next prime is 12211324249. The reversal of 12211324243 is 34242311221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34242311221 = 42751 ⋅800971.

It is a cyclic number.

It is not a de Polignac number, because 12211324243 - 2¹ = 12211324241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12211324241) 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, 265463548 + ... + 265463593.

It is an arithmetic number, because the mean of its divisors is an integer number (3185562852).

Almost surely, 2^12211324243 is an apocalyptic number.

12211324243 is a deficient number, since it is larger than the sum of its proper divisors (530927165).

12211324243 is an equidigital number, since it uses as much as digits as its factorization.

12211324243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530927164.

The product of its digits is 2304, while the sum is 25.

Adding to 12211324243 its reverse (34242311221), we get a palindrome (46453635464).

The spelling of 12211324243 in words is "twelve billion, two hundred eleven million, three hundred twenty-four thousand, two hundred forty-three".