12112004423 has 4 divisors (see below), whose sum is σ = 12749478360. Its totient is φ = 11474530488.

The previous prime is 12112004371. The next prime is 12112004431. The reversal of 12112004423 is 32440021121.

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

It is a cyclic number.

It is not a de Polignac number, because 12112004423 - 2¹⁴ = 12111988039 is a prime.

It is a super-2 number, since 2×12112004423² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12112004395 and 12112004404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12112004473) 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, 318736940 + ... + 318736977.

It is an arithmetic number, because the mean of its divisors is an integer number (3187369590).

Almost surely, 2^12112004423 is an apocalyptic number.

12112004423 is a deficient number, since it is larger than the sum of its proper divisors (637473937).

12112004423 is an equidigital number, since it uses as much as digits as its factorization.

12112004423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637473936.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 12112004423 its reverse (32440021121), we get a palindrome (44552025544).

The spelling of 12112004423 in words is "twelve billion, one hundred twelve million, four thousand, four hundred twenty-three".