12012000021200 has 30 divisors (see below), whose sum is σ = 28858830051894. Its totient is φ = 4804800008320.

The previous prime is 12012000021199. The next prime is 12012000021221. The reversal of 12012000021200 is 212000021021.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1777400908864 + 10234599112336 = 1333192^2 + 3199156^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15014999627 + ... + 15015000426.

Almost surely, 2^{12012000021200} is an apocalyptic number.

12012000021200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12012000021200 is an abundant number, since it is smaller than the sum of its proper divisors (16846830030694).

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

12012000021200 is a wasteful number, since it uses less digits than its factorization.

12012000021200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30030000071 (or 30030000060 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 12012000021200 its reverse (212000021021), we get a palindrome (12224000042221).

The spelling of 12012000021200 in words is "twelve trillion, twelve billion, twenty-one thousand, two hundred".