20110205111 has 2 divisors, whose sum is σ = 20110205112. Its totient is φ = 20110205110.

The previous prime is 20110205077. The next prime is 20110205147. The reversal of 20110205111 is 11150201102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20110205111 - 2¹⁸ = 20109942967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20110205711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055102555 + 10055102556.

It is an arithmetic number, because the mean of its divisors is an integer number (10055102556).

Almost surely, 2^20110205111 is an apocalyptic number.

20110205111 is a deficient number, since it is larger than the sum of its proper divisors (1).

20110205111 is an equidigital number, since it uses as much as digits as its factorization.

20110205111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20, while the sum is 14.

Adding to 20110205111 its reverse (11150201102), we get a palindrome (31260406213).

The spelling of 20110205111 in words is "twenty billion, one hundred ten million, two hundred five thousand, one hundred eleven".