211122012111211 has 2 divisors, whose sum is σ = 211122012111212. Its totient is φ = 211122012111210.

The previous prime is 211122012111041. The next prime is 211122012111223. The reversal of 211122012111211 is 112111210221112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211122012111211 - 2¹⁵ = 211122012078443 is a prime.

It is not a weakly prime, because it can be changed into another prime (211122012111271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105561006055605 + 105561006055606.

It is an arithmetic number, because the mean of its divisors is an integer number (105561006055606).

Almost surely, 2^{211122012111211} is an apocalyptic number.

211122012111211 is a deficient number, since it is larger than the sum of its proper divisors (1).

211122012111211 is an equidigital number, since it uses as much as digits as its factorization.

211122012111211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 211122012111211 its reverse (112111210221112), we get a palindrome (323233222332323).

The spelling of 211122012111211 in words is "two hundred eleven trillion, one hundred twenty-two billion, twelve million, one hundred eleven thousand, two hundred eleven".