12123012243 has 8 divisors (see below), whose sum is σ = 16185542656. Its totient is φ = 8071245000.

The previous prime is 12123012233. The next prime is 12123012271. The reversal of 12123012243 is 34221032121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12123012243 - 2⁵ = 12123012211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12123012233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2688163 + ... + 2692668.

It is an arithmetic number, because the mean of its divisors is an integer number (2023192832).

Almost surely, 2^12123012243 is an apocalyptic number.

12123012243 is a deficient number, since it is larger than the sum of its proper divisors (4062530413).

12123012243 is an equidigital number, since it uses as much as digits as its factorization.

12123012243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5381585.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 12123012243 its reverse (34221032121), we get a palindrome (46344044364).

The spelling of 12123012243 in words is "twelve billion, one hundred twenty-three million, twelve thousand, two hundred forty-three".