12211201000221 has 16 divisors (see below), whose sum is σ = 16413054072000. Its totient is φ = 8075222166528.

The previous prime is 12211201000189. The next prime is 12211201000223. The reversal of 12211201000221 is 12200010211221.

It is not a de Polignac number, because 12211201000221 - 2⁵ = 12211201000189 is a prime.

It is a super-2 number, since 2×12211201000221² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12211201000221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211201000223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18152836 + ... + 18813501.

It is an arithmetic number, because the mean of its divisors is an integer number (1025815879500).

Almost surely, 2^{12211201000221} is an apocalyptic number.

It is an amenable number.

12211201000221 is a deficient number, since it is larger than the sum of its proper divisors (4201853071779).

12211201000221 is a wasteful number, since it uses less digits than its factorization.

12211201000221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36967228.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12211201000221 its reverse (12200010211221), we get a palindrome (24411211211442).

The spelling of 12211201000221 in words is "twelve trillion, two hundred eleven billion, two hundred one million, two hundred twenty-one", and thus it is an aban number.