12212120111227 has 2 divisors, whose sum is σ = 12212120111228. Its totient is φ = 12212120111226.

The previous prime is 12212120111173. The next prime is 12212120111249. The reversal of 12212120111227 is 72211102121221.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12212120111227 - 2⁷ = 12212120111099 is a prime.

It is a super-2 number, since 2×12212120111227² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12212120711227) 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 as a sum of consecutive naturals, namely, 6106060055613 + 6106060055614.

It is an arithmetic number, because the mean of its divisors is an integer number (6106060055614).

Almost surely, 2^{12212120111227} is an apocalyptic number.

12212120111227 is a deficient number, since it is larger than the sum of its proper divisors (1).

12212120111227 is an equidigital number, since it uses as much as digits as its factorization.

12212120111227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 25.

Adding to 12212120111227 its reverse (72211102121221), we get a palindrome (84423222232448).

The spelling of 12212120111227 in words is "twelve trillion, two hundred twelve billion, one hundred twenty million, one hundred eleven thousand, two hundred twenty-seven".