12212002221200 has 30 divisors (see below), whose sum is σ = 29339335337394. Its totient is φ = 4884800888320.

The previous prime is 12212002221193. The next prime is 12212002221203. The reversal of 12212002221200 is 212220021221.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 481541620624 + 11730460600576 = 693932^2 + 3424976^2 .

It is not an unprimeable number, because it can be changed into a prime (12212002221203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15265002377 + ... + 15265003176.

Almost surely, 2^{12212002221200} is an apocalyptic number.

12212002221200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12212002221200 is an abundant number, since it is smaller than the sum of its proper divisors (17127333116194).

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

12212002221200 is a wasteful number, since it uses less digits than its factorization.

12212002221200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30530005571 (or 30530005560 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 12212002221200 its reverse (212220021221), we get a palindrome (12424222242421).

The spelling of 12212002221200 in words is "twelve trillion, two hundred twelve billion, two million, two hundred twenty-one thousand, two hundred".