12201100002221 has 8 divisors (see below), whose sum is σ = 13223338172184. Its totient is φ = 11190817834560.

The previous prime is 12201100002211. The next prime is 12201100002293. The reversal of 12201100002221 is 12220000110221.

12201100002221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 10632496996 + 12190467505225 = 103114^2 + 3491485^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12201100002221 - 2¹⁰ = 12201100001197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12201100002196 and 12201100002205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12201100002211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2988998450 + ... + 2989002531.

It is an arithmetic number, because the mean of its divisors is an integer number (1652917271523).

Almost surely, 2^{12201100002221} is an apocalyptic number.

It is an amenable number.

12201100002221 is a deficient number, since it is larger than the sum of its proper divisors (1022238169963).

12201100002221 is a wasteful number, since it uses less digits than its factorization.

12201100002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5978001151.

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

Adding to 12201100002221 its reverse (12220000110221), we get a palindrome (24421100112442).

The spelling of 12201100002221 in words is "twelve trillion, two hundred one billion, one hundred million, two thousand, two hundred twenty-one".