2121211211027 has 2 divisors, whose sum is σ = 2121211211028. Its totient is φ = 2121211211026.

The previous prime is 2121211210991. The next prime is 2121211211029. The reversal of 2121211211027 is 7201121121212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2121211211027 - 2⁸ = 2121211210771 is a prime.

Together with 2121211211029, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2121211210993 and 2121211211011.

It is not a weakly prime, because it can be changed into another prime (2121211211029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060605605513 + 1060605605514.

It is an arithmetic number, because the mean of its divisors is an integer number (1060605605514).

Almost surely, 2^{2121211211027} is an apocalyptic number.

2121211211027 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121211211027 is an equidigital number, since it uses as much as digits as its factorization.

2121211211027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 23.

Adding to 2121211211027 its reverse (7201121121212), we get a palindrome (9322332332239).

The spelling of 2121211211027 in words is "two trillion, one hundred twenty-one billion, two hundred eleven million, two hundred eleven thousand, twenty-seven".