12204113123 has 4 divisors (see below), whose sum is σ = 12624944640. Its totient is φ = 11783281608.

The previous prime is 12204113111. The next prime is 12204113143. The reversal of 12204113123 is 32131140221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12204113123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12204113095 and 12204113104.

It is not an unprimeable number, because it can be changed into a prime (12204113143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210415715 + ... + 210415772.

It is an arithmetic number, because the mean of its divisors is an integer number (3156236160).

Almost surely, 2^12204113123 is an apocalyptic number.

12204113123 is a deficient number, since it is larger than the sum of its proper divisors (420831517).

12204113123 is an equidigital number, since it uses as much as digits as its factorization.

12204113123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420831516.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 12204113123 its reverse (32131140221), we get a palindrome (44335253344).

The spelling of 12204113123 in words is "twelve billion, two hundred four million, one hundred thirteen thousand, one hundred twenty-three".