12012200100221 has 4 divisors (see below), whose sum is σ = 12039315676512. Its totient is φ = 11985084523932.

The previous prime is 12012200100077. The next prime is 12012200100293. The reversal of 12012200100221 is 12200100221021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12012200100221 - 2³⁰ = 12011126358397 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12012200100196 and 12012200100205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012202100221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13557787481 + ... + 13557788366.

It is an arithmetic number, because the mean of its divisors is an integer number (3009828919128).

Almost surely, 2^{12012200100221} is an apocalyptic number.

It is an amenable number.

12012200100221 is a deficient number, since it is larger than the sum of its proper divisors (27115576291).

12012200100221 is an equidigital number, since it uses as much as digits as its factorization.

12012200100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27115576290.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12012200100221 its reverse (12200100221021), we get a palindrome (24212300321242).

The spelling of 12012200100221 in words is "twelve trillion, twelve billion, two hundred million, one hundred thousand, two hundred twenty-one".