12212120111211 has 12 divisors (see below), whose sum is σ = 18116478483792. Its totient is φ = 7921375207056.

The previous prime is 12212120111173. The next prime is 12212120111227. The reversal of 12212120111211 is 11211102121221.

It is a happy number.

12212120111211 is a `hidden beast` number, since 1 + 221 + 2 + 120 + 111 + 211 = 666.

12212120111211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12212120111211 - 2¹³ = 12212120103019 is a prime.

It is a super-2 number, since 2×12212120111211² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12212120111311) 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, 18336516351 + ... + 18336517016.

It is an arithmetic number, because the mean of its divisors is an integer number (1509706540316).

Almost surely, 2^{12212120111211} is an apocalyptic number.

12212120111211 is a deficient number, since it is larger than the sum of its proper divisors (5904358372581).

12212120111211 is a wasteful number, since it uses less digits than its factorization.

12212120111211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36673033410 (or 36673033407 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 12212120111211 its reverse (11211102121221), we get a palindrome (23423222232432).

The spelling of 12212120111211 in words is "twelve trillion, two hundred twelve billion, one hundred twenty million, one hundred eleven thousand, two hundred eleven".