12001100120221 has 2 divisors, whose sum is σ = 12001100120222. Its totient is φ = 12001100120220.

The previous prime is 12001100120201. The next prime is 12001100120263. The reversal of 12001100120221 is 12202100110021.

12001100120221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11985478620025 + 15621500196 = 3462005^2 + 124986^2 .

It is a cyclic number.

It is not a de Polignac number, because 12001100120221 - 2¹¹ = 12001100118173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12001100120201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000550060110 + 6000550060111.

It is an arithmetic number, because the mean of its divisors is an integer number (6000550060111).

Almost surely, 2^{12001100120221} is an apocalyptic number.

It is an amenable number.

12001100120221 is a deficient number, since it is larger than the sum of its proper divisors (1).

12001100120221 is an equidigital number, since it uses as much as digits as its factorization.

12001100120221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12001100120221 its reverse (12202100110021), we get a palindrome (24203200230242).

The spelling of 12001100120221 in words is "twelve trillion, one billion, one hundred million, one hundred twenty thousand, two hundred twenty-one".