12204223123 has 4 divisors (see below), whose sum is σ = 12358707040. Its totient is φ = 12049739208.

The previous prime is 12204223117. The next prime is 12204223159. The reversal of 12204223123 is 32132240221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32132240221 = 8017 ⋅4008013.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12204223123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12204223094 and 12204223103.

It is not an unprimeable number, because it can be changed into a prime (12204223103) 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, 77241840 + ... + 77241997.

It is an arithmetic number, because the mean of its divisors is an integer number (3089676760).

Almost surely, 2^12204223123 is an apocalyptic number.

12204223123 is a deficient number, since it is larger than the sum of its proper divisors (154483917).

12204223123 is an equidigital number, since it uses as much as digits as its factorization.

12204223123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154483916.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 12204223123 its reverse (32132240221), we get a palindrome (44336463344).

The spelling of 12204223123 in words is "twelve billion, two hundred four million, two hundred twenty-three thousand, one hundred twenty-three".