2121212022211 has 2 divisors, whose sum is σ = 2121212022212. Its totient is φ = 2121212022210.

The previous prime is 2121212022187. The next prime is 2121212022227. The reversal of 2121212022211 is 1122202121212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2121212022211 - 2²³ = 2121203633603 is a prime.

It is not a weakly prime, because it can be changed into another prime (2121212022011) 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, 1060606011105 + 1060606011106.

It is an arithmetic number, because the mean of its divisors is an integer number (1060606011106).

Almost surely, 2^{2121212022211} is an apocalyptic number.

2121212022211 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121212022211 is an equidigital number, since it uses as much as digits as its factorization.

2121212022211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 2121212022211 its reverse (1122202121212), we get a palindrome (3243414143423).

Subtracting from 2121212022211 its reverse (1122202121212), we obtain a palindrome (999009900999).

The spelling of 2121212022211 in words is "two trillion, one hundred twenty-one billion, two hundred twelve million, twenty-two thousand, two hundred eleven".