12243223123 has 4 divisors (see below), whose sum is σ = 12503717280. Its totient is φ = 11982728968.

The previous prime is 12243223121. The next prime is 12243223129. The reversal of 12243223123 is 32132234221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32132234221 = 8209 ⋅3914269.

It is a cyclic number.

It is not a de Polignac number, because 12243223123 - 2¹ = 12243223121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12243223121) 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, 130247008 + ... + 130247101.

It is an arithmetic number, because the mean of its divisors is an integer number (3125929320).

Almost surely, 2^12243223123 is an apocalyptic number.

12243223123 is a deficient number, since it is larger than the sum of its proper divisors (260494157).

12243223123 is an equidigital number, since it uses as much as digits as its factorization.

12243223123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260494156.

The product of its digits is 3456, while the sum is 25.

Adding to 12243223123 its reverse (32132234221), we get a palindrome (44375457344).

The spelling of 12243223123 in words is "twelve billion, two hundred forty-three million, two hundred twenty-three thousand, one hundred twenty-three".