12202340243 has 4 divisors (see below), whose sum is σ = 12221318088. Its totient is φ = 12183362400.

The previous prime is 12202340231. The next prime is 12202340261. The reversal of 12202340243 is 34204320221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34204320221 = 61 ⋅560726561.

It is a cyclic number.

It is not a de Polignac number, because 12202340243 - 2⁸ = 12202339987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12202340743) 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, 9487958 + ... + 9489243.

It is an arithmetic number, because the mean of its divisors is an integer number (3055329522).

Almost surely, 2^12202340243 is an apocalyptic number.

12202340243 is a deficient number, since it is larger than the sum of its proper divisors (18977845).

12202340243 is an equidigital number, since it uses as much as digits as its factorization.

12202340243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18977844.

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

Adding to 12202340243 its reverse (34204320221), we get a palindrome (46406660464).

The spelling of 12202340243 in words is "twelve billion, two hundred two million, three hundred forty thousand, two hundred forty-three".