12100222121211 has 48 divisors (see below), whose sum is σ = 20862543187200. Its totient is φ = 6613510503744.

The previous prime is 12100222121177. The next prime is 12100222121213. The reversal of 12100222121211 is 11212122200121.

12100222121211 is a `hidden beast` number, since 1 + 210 + 0 + 2 + 221 + 21 + 211 = 666.

It is not a de Polignac number, because 12100222121211 - 2¹⁰ = 12100222120187 is a prime.

It is a super-2 number, since 2×12100222121211² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12100222121213) 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 47 ways as a sum of consecutive naturals, for example, 43854001 + ... + 44129058.

It is an arithmetic number, because the mean of its divisors is an integer number (434636316400).

Almost surely, 2^{12100222121211} is an apocalyptic number.

12100222121211 is a deficient number, since it is larger than the sum of its proper divisors (8762321065989).

12100222121211 is a wasteful number, since it uses less digits than its factorization.

12100222121211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87983168 (or 87983165 counting only the distinct ones).

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

Adding to 12100222121211 its reverse (11212122200121), we get a palindrome (23312344321332).

The spelling of 12100222121211 in words is "twelve trillion, one hundred billion, two hundred twenty-two million, one hundred twenty-one thousand, two hundred eleven".