2221220211211 has 2 divisors, whose sum is σ = 2221220211212. Its totient is φ = 2221220211210.

The previous prime is 2221220211173. The next prime is 2221220211227. The reversal of 2221220211211 is 1121120221222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2221220211211 - 2¹⁹ = 2221219686923 is a prime.

It is not a weakly prime, because it can be changed into another prime (2221220211241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110610105605 + 1110610105606.

It is an arithmetic number, because the mean of its divisors is an integer number (1110610105606).

Almost surely, 2^{2221220211211} is an apocalyptic number.

2221220211211 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221220211211 is an equidigital number, since it uses as much as digits as its factorization.

2221220211211 is an evil number, because the sum of its binary digits is even.

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

Adding to 2221220211211 its reverse (1121120221222), we get a palindrome (3342340432433).

The spelling of 2221220211211 in words is "two trillion, two hundred twenty-one billion, two hundred twenty million, two hundred eleven thousand, two hundred eleven".