21214111113227 has 2 divisors, whose sum is σ = 21214111113228. Its totient is φ = 21214111113226.

The previous prime is 21214111113203. The next prime is 21214111113229. The reversal of 21214111113227 is 72231111141212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21214111113227 - 2⁴² = 16816064602123 is a prime.

Together with 21214111113229, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21214111113227.

It is not a weakly prime, because it can be changed into another prime (21214111113229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10607055556613 + 10607055556614.

It is an arithmetic number, because the mean of its divisors is an integer number (10607055556614).

Almost surely, 2^{21214111113227} is an apocalyptic number.

21214111113227 is a deficient number, since it is larger than the sum of its proper divisors (1).

21214111113227 is an equidigital number, since it uses as much as digits as its factorization.

21214111113227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1344, while the sum is 29.

Adding to 21214111113227 its reverse (72231111141212), we get a palindrome (93445222254439).

The spelling of 21214111113227 in words is "twenty-one trillion, two hundred fourteen billion, one hundred eleven million, one hundred thirteen thousand, two hundred twenty-seven".