12123223230 has 16 divisors (see below), whose sum is σ = 29095735824. Its totient is φ = 3232859520.

The previous prime is 12123223219. The next prime is 12123223237. The reversal of 12123223230 is 3232232121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12123223197 and 12123223206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12123223237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202053691 + ... + 202053750.

It is an arithmetic number, because the mean of its divisors is an integer number (1818483489).

Almost surely, 2^12123223230 is an apocalyptic number.

12123223230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12123223230 is an abundant number, since it is smaller than the sum of its proper divisors (16972512594).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12123223230 is a wasteful number, since it uses less digits than its factorization.

12123223230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404107451.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 12123223230 its reverse (3232232121), we get a palindrome (15355455351).

The spelling of 12123223230 in words is "twelve billion, one hundred twenty-three million, two hundred twenty-three thousand, two hundred thirty".