12211202212101 has 6 divisors (see below), whose sum is σ = 17638403195270. Its totient is φ = 8140801474728.

The previous prime is 12211202212019. The next prime is 12211202212117. The reversal of 12211202212101 is 10121220211221.

12211202212101 is a `hidden beast` number, since 1 + 2 + 211 + 20 + 221 + 210 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 8952058016001 + 3259144196100 = 2991999^2 + 1805310^2 .

It is not a de Polignac number, because 12211202212101 - 2⁹ = 12211202211589 is a prime.

It is a super-2 number, since 2×12211202212101² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211202212141) 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 5 ways as a sum of consecutive naturals, for example, 678400122886 + ... + 678400122903.

Almost surely, 2^{12211202212101} is an apocalyptic number.

It is an amenable number.

12211202212101 is a deficient number, since it is larger than the sum of its proper divisors (5427200983169).

12211202212101 is a wasteful number, since it uses less digits than its factorization.

12211202212101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1356800245795 (or 1356800245792 counting only the distinct ones).

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

Adding to 12211202212101 its reverse (10121220211221), we get a palindrome (22332422423322).

The spelling of 12211202212101 in words is "twelve trillion, two hundred eleven billion, two hundred two million, two hundred twelve thousand, one hundred one".