12003331212 has 36 divisors (see below), whose sum is σ = 30345236376. Its totient is φ = 4000651200.

The previous prime is 12003331091. The next prime is 12003331237. The reversal of 12003331212 is 21213330021.

12003331212 is a `hidden beast` number, since 120 + 0 + 3 + 331 + 212 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 470587 + ... + 495437.

Almost surely, 2^12003331212 is an apocalyptic number.

12003331212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12003331212 is an abundant number, since it is smaller than the sum of its proper divisors (18341905164).

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

12003331212 is a wasteful number, since it uses less digits than its factorization.

12003331212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38278 (or 38273 counting only the distinct ones).

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

Adding to 12003331212 its reverse (21213330021), we get a palindrome (33216661233).

The spelling of 12003331212 in words is "twelve billion, three million, three hundred thirty-one thousand, two hundred twelve".