8201111 has 2 divisors, whose sum is σ = 8201112. Its totient is φ = 8201110.

The previous prime is 8201101. The next prime is 8201153. The reversal of 8201111 is 1111028.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8201111 - 2¹⁴ = 8184727 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

8201111 is a modest number, since divided by 1111 gives 820 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8201101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4100555 + 4100556.

It is an arithmetic number, because the mean of its divisors is an integer number (4100556).

Almost surely, 2^8201111 is an apocalyptic number.

8201111 is a deficient number, since it is larger than the sum of its proper divisors (1).

8201111 is an equidigital number, since it uses as much as digits as its factorization.

8201111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 14.

The square root of 8201111 is about 2863.7581950996. The cubic root of 8201111 is about 201.6620742832.

Adding to 8201111 its reverse (1111028), we get a palindrome (9312139).

The spelling of 8201111 in words is "eight million, two hundred one thousand, one hundred eleven".