12000133212 has 24 divisors (see below), whose sum is σ = 28020624912. Its totient is φ = 3997142400.

The previous prime is 12000133193. The next prime is 12000133237. The reversal of 12000133212 is 21233100021.

It is a junction number, because it is equal to n+sod(n) for n = 12000133191 and 12000133200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 345489 + ... + 378632.

It is an arithmetic number, because the mean of its divisors is an integer number (1167526038).

Almost surely, 2^12000133212 is an apocalyptic number.

12000133212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12000133212 is an abundant number, since it is smaller than the sum of its proper divisors (16020491700).

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

12000133212 is a wasteful number, since it uses less digits than its factorization.

12000133212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725509 (or 725507 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 12000133212 its reverse (21233100021), we get a palindrome (33233233233).

The spelling of 12000133212 in words is "twelve billion, one hundred thirty-three thousand, two hundred twelve".