12123224342 has 4 divisors (see below), whose sum is σ = 18184836516. Its totient is φ = 6061612170.

The previous prime is 12123224339. The next prime is 12123224371. The reversal of 12123224342 is 24342232121.

12123224342 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24342232121 = 78157 ⋅311453.

It is a super-2 number, since 2×12123224342² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 3030806084 + ... + 3030806087.

It is an arithmetic number, because the mean of its divisors is an integer number (4546209129).

Almost surely, 2^12123224342 is an apocalyptic number.

12123224342 is a deficient number, since it is larger than the sum of its proper divisors (6061612174).

12123224342 is an equidigital number, since it uses as much as digits as its factorization.

12123224342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6061612173.

The product of its digits is 4608, while the sum is 26.

Adding to 12123224342 its reverse (24342232121), we get a palindrome (36465456463).

The spelling of 12123224342 in words is "twelve billion, one hundred twenty-three million, two hundred twenty-four thousand, three hundred forty-two".