12011133121212 has 12 divisors (see below), whose sum is σ = 28025977282856. Its totient is φ = 4003711040400.

The previous prime is 12011133121159. The next prime is 12011133121291. The reversal of 12011133121212 is 21212133111021.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 500463880039 + ... + 500463880062.

Almost surely, 2^{12011133121212} is an apocalyptic number.

12011133121212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12011133121212 is an abundant number, since it is smaller than the sum of its proper divisors (16014844161644).

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

12011133121212 is a wasteful number, since it uses less digits than its factorization.

12011133121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000927760108 (or 1000927760106 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 12011133121212 its reverse (21212133111021), we get a palindrome (33223266232233).

The spelling of 12011133121212 in words is "twelve trillion, eleven billion, one hundred thirty-three million, one hundred twenty-one thousand, two hundred twelve".