12123214423 has 16 divisors (see below), whose sum is σ = 13179939840. Its totient is φ = 11108750400.

The previous prime is 12123214421. The next prime is 12123214507. The reversal of 12123214423 is 32441232121.

12123214423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12123214423 - 2¹ = 12123214421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12123214421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1415811 + ... + 1424347.

It is an arithmetic number, because the mean of its divisors is an integer number (823746240).

Almost surely, 2^12123214423 is an apocalyptic number.

12123214423 is a deficient number, since it is larger than the sum of its proper divisors (1056725417).

12123214423 is a wasteful number, since it uses less digits than its factorization.

12123214423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10998.

The product of its digits is 2304, while the sum is 25.

Adding to 12123214423 its reverse (32441232121), we get a palindrome (44564446544).

The spelling of 12123214423 in words is "twelve billion, one hundred twenty-three million, two hundred fourteen thousand, four hundred twenty-three".