211122012202111 has 2 divisors, whose sum is σ = 211122012202112. Its totient is φ = 211122012202110.

The previous prime is 211122012202099. The next prime is 211122012202237. The reversal of 211122012202111 is 111202210221112.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211122012202111 - 2¹⁷ = 211122012071039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211122012202411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105561006101055 + 105561006101056.

It is an arithmetic number, because the mean of its divisors is an integer number (105561006101056).

Almost surely, 2^{211122012202111} is an apocalyptic number.

211122012202111 is a deficient number, since it is larger than the sum of its proper divisors (1).

211122012202111 is an equidigital number, since it uses as much as digits as its factorization.

211122012202111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 211122012202111 its reverse (111202210221112), we get a palindrome (322324222423223).

The spelling of 211122012202111 in words is "two hundred eleven trillion, one hundred twenty-two billion, twelve million, two hundred two thousand, one hundred eleven".