12211201100221 has 4 divisors (see below), whose sum is σ = 12211235371744. Its totient is φ = 12211166828700.

The previous prime is 12211201100209. The next prime is 12211201100233. The reversal of 12211201100221 is 12200110211221.

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 an interprime number because it is at equal distance from previous prime (12211201100209) and next prime (12211201100233).

It is a cyclic number.

It is not a de Polignac number, because 12211201100221 - 2²⁵ = 12211167545789 is a prime.

It is a super-2 number, since 2×12211201100221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12211201100195 and 12211201100204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211201100321) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 16595625 + ... + 17315806.

It is an arithmetic number, because the mean of its divisors is an integer number (3052808842936).

Almost surely, 2^{12211201100221} is an apocalyptic number.

It is an amenable number.

12211201100221 is a deficient number, since it is larger than the sum of its proper divisors (34271523).

12211201100221 is an equidigital number, since it uses as much as digits as its factorization.

12211201100221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34271522.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12211201100221 its reverse (12200110211221), we get a palindrome (24411311311442).

The spelling of 12211201100221 in words is "twelve trillion, two hundred eleven billion, two hundred one million, one hundred thousand, two hundred twenty-one".