12211202101212 has 36 divisors (see below), whose sum is σ = 31045628479320. Its totient is φ = 4046872370592.

The previous prime is 12211202101211. The next prime is 12211202101243. The reversal of 12211202101212 is 21210120211221.

12211202101212 is a `hidden beast` number, since 1 + 221 + 1 + 20 + 210 + 1 + 212 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×12211202101212² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211202101211) 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 11 ways as a sum of consecutive naturals, for example, 980340762 + ... + 980353217.

It is an arithmetic number, because the mean of its divisors is an integer number (862378568870).

Almost surely, 2^{12211202101212} is an apocalyptic number.

12211202101212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12211202101212 is an abundant number, since it is smaller than the sum of its proper divisors (18834426378108).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12211202101212 is a wasteful number, since it uses less digits than its factorization.

12211202101212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1960694162 (or 1960694157 counting only the distinct ones).

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

Adding to 12211202101212 its reverse (21210120211221), we get a palindrome (33421322312433).

The spelling of 12211202101212 in words is "twelve trillion, two hundred eleven billion, two hundred two million, one hundred one thousand, two hundred twelve".