12210121220211 has 12 divisors (see below), whose sum is σ = 17636926419840. Its totient is φ = 8140041740880.

The previous prime is 12210121220207. The next prime is 12210121220279. The reversal of 12210121220211 is 11202212101221.

12210121220211 is a `hidden beast` number, since 1 + 2 + 210 + 1 + 21 + 220 + 211 = 666.

It is not a de Polignac number, because 12210121220211 - 2² = 12210121220207 is a prime.

It is a super-3 number, since 3×12210121220211³ (a number of 40 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (12210121228211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1209171 + ... + 5087468.

It is an arithmetic number, because the mean of its divisors is an integer number (1469743868320).

Almost surely, 2^{12210121220211} is an apocalyptic number.

12210121220211 is a deficient number, since it is larger than the sum of its proper divisors (5426805199629).

12210121220211 is a wasteful number, since it uses less digits than its factorization.

12210121220211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6512106 (or 6512103 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12210121220211 its reverse (11202212101221), we get a palindrome (23412333321432).

The spelling of 12210121220211 in words is "twelve trillion, two hundred ten billion, one hundred twenty-one million, two hundred twenty thousand, two hundred eleven".