12133033212 has 48 divisors (see below), whose sum is σ = 30057592320. Its totient is φ = 3796046592.

The previous prime is 12133033183. The next prime is 12133033219. The reversal of 12133033212 is 21233033121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12133033219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6162 + ... + 155897.

It is an arithmetic number, because the mean of its divisors is an integer number (626199840).

Almost surely, 2^12133033212 is an apocalyptic number.

12133033212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12133033212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15028796160).

12133033212 is an abundant number, since it is smaller than the sum of its proper divisors (17924559108).

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

12133033212 is a wasteful number, since it uses less digits than its factorization.

12133033212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162450 (or 162448 counting only the distinct ones).

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

Adding to 12133033212 its reverse (21233033121), we get a palindrome (33366066333).

Subtracting 12133033212 from its reverse (21233033121), we obtain a palindrome (9099999909).

The spelling of 12133033212 in words is "twelve billion, one hundred thirty-three million, thirty-three thousand, two hundred twelve".