211020202111 has 2 divisors, whose sum is σ = 211020202112. Its totient is φ = 211020202110.

The previous prime is 211020202093. The next prime is 211020202117. The reversal of 211020202111 is 111202020112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211020202111 - 2⁷ = 211020201983 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211020202091 and 211020202100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211020202117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105510101055 + 105510101056.

It is an arithmetic number, because the mean of its divisors is an integer number (105510101056).

Almost surely, 2^211020202111 is an apocalyptic number.

211020202111 is a deficient number, since it is larger than the sum of its proper divisors (1).

211020202111 is an equidigital number, since it uses as much as digits as its factorization.

211020202111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 211020202111 its reverse (111202020112), we get a palindrome (322222222223).

The spelling of 211020202111 in words is "two hundred eleven billion, twenty million, two hundred two thousand, one hundred eleven".