12133322012 has 24 divisors (see below), whose sum is σ = 24724508256. Its totient is φ = 5101881408.

The previous prime is 12133322009. The next prime is 12133322017. The reversal of 12133322012 is 21022333121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12133322017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4086563 + ... + 4089530.

It is an arithmetic number, because the mean of its divisors is an integer number (1030187844).

Almost surely, 2^12133322012 is an apocalyptic number.

It is an amenable number.

12133322012 is an abundant number, since it is smaller than the sum of its proper divisors (12591186244).

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

12133322012 is a wasteful number, since it uses less digits than its factorization.

12133322012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8176157 (or 8176155 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 12133322012 its reverse (21022333121), we get a palindrome (33155655133).

The spelling of 12133322012 in words is "twelve billion, one hundred thirty-three million, three hundred twenty-two thousand, twelve".