12123133230 has 32 divisors (see below), whose sum is σ = 31333637664. Its totient is φ = 2984155776.

The previous prime is 12123133223. The next prime is 12123133247. The reversal of 12123133230 is 3233132121.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12123133197 and 12123133206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15542089 + ... + 15542868.

It is an arithmetic number, because the mean of its divisors is an integer number (979176177).

Almost surely, 2^12123133230 is an apocalyptic number.

12123133230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12123133230 is an abundant number, since it is smaller than the sum of its proper divisors (19210504434).

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

12123133230 is a wasteful number, since it uses less digits than its factorization.

12123133230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31084980.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 12123133230 its reverse (3233132121), we get a palindrome (15356265351).

The spelling of 12123133230 in words is "twelve billion, one hundred twenty-three million, one hundred thirty-three thousand, two hundred thirty".