12000121212 has 12 divisors (see below), whose sum is σ = 28000282856. Its totient is φ = 4000040400.

The previous prime is 12000121141. The next prime is 12000121291. The reversal of 12000121212 is 21212100021.

12000121212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Harshad number since it is a multiple of its sum of digits (12), and also a Moran number because the ratio is a prime number: 1000010101 = 12000121212 / (1 + 2 + 0 + 0 + 0 + 1 + 2 + 1 + 2 + 1 + 2).

12000121212 is a modest number, since divided by 121212 gives 12000 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 500005039 + ... + 500005062.

Almost surely, 2^12000121212 is an apocalyptic number.

12000121212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12000121212 is an abundant number, since it is smaller than the sum of its proper divisors (16000161644).

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

12000121212 is a wasteful number, since it uses less digits than its factorization.

12000121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000010108 (or 1000010106 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12000121212 its reverse (21212100021), we get a palindrome (33212221233).

The spelling of 12000121212 in words is "twelve billion, one hundred twenty-one thousand, two hundred twelve".