12102210201221 has 16 divisors (see below), whose sum is σ = 14432607537408. Its totient is φ = 9922200288000.

The previous prime is 12102210201197. The next prime is 12102210201233. The reversal of 12102210201221 is 12210201220121.

It is a de Polignac number, because none of the positive numbers 2^k-12102210201221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12102210201221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12102210201271) 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, 16474871 + ... + 17193771.

It is an arithmetic number, because the mean of its divisors is an integer number (902037971088).

Almost surely, 2^{12102210201221} is an apocalyptic number.

It is an amenable number.

12102210201221 is a deficient number, since it is larger than the sum of its proper divisors (2330397336187).

12102210201221 is a wasteful number, since it uses less digits than its factorization.

12102210201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823492.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12102210201221 its reverse (12210201220121), we get a palindrome (24312411421342).

The spelling of 12102210201221 in words is "twelve trillion, one hundred two billion, two hundred ten million, two hundred one thousand, two hundred twenty-one".