12133230012 has 18 divisors (see below), whose sum is σ = 30670109288. Its totient is φ = 4044409992.

The previous prime is 12133230001. The next prime is 12133230013. The reversal of 12133230012 is 21003233121.

12133230012 is a `hidden beast` number, since 1 + 21 + 332 + 300 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12133230013) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 168517048 + ... + 168517119.

Almost surely, 2^12133230012 is an apocalyptic number.

12133230012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12133230012 is an abundant number, since it is smaller than the sum of its proper divisors (18536879276).

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

12133230012 is a wasteful number, since it uses less digits than its factorization.

12133230012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337034177 (or 337034172 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 12133230012 its reverse (21003233121), we get a palindrome (33136463133).

The spelling of 12133230012 in words is "twelve billion, one hundred thirty-three million, two hundred thirty thousand, twelve".