211122020120111 has 2 divisors, whose sum is σ = 211122020120112. Its totient is φ = 211122020120110.

The previous prime is 211122020120059. The next prime is 211122020120129. The reversal of 211122020120111 is 111021020221112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211122020120111 - 2¹⁸ = 211122019857967 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211122020120111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211122020120131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105561010060055 + 105561010060056.

It is an arithmetic number, because the mean of its divisors is an integer number (105561010060056).

Almost surely, 2^{211122020120111} is an apocalyptic number.

211122020120111 is a deficient number, since it is larger than the sum of its proper divisors (1).

211122020120111 is an equidigital number, since it uses as much as digits as its factorization.

211122020120111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 211122020120111 its reverse (111021020221112), we get a palindrome (322143040341223).

The spelling of 211122020120111 in words is "two hundred eleven trillion, one hundred twenty-two billion, twenty million, one hundred twenty thousand, one hundred eleven".