8101111 has 4 divisors (see below), whose sum is σ = 8119072. Its totient is φ = 8083152.

The previous prime is 8101097. The next prime is 8101117. The reversal of 8101111 is 1111018.

8101111 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8101111 - 2¹³ = 8092919 is a prime.

It is a Duffinian number.

8101111 is a modest number, since divided by 1111 gives 810 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 8101091 and 8101100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8101117) 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 in 3 ways as a sum of consecutive naturals, for example, 8286 + ... + 9211.

It is an arithmetic number, because the mean of its divisors is an integer number (2029768).

Almost surely, 2^8101111 is an apocalyptic number.

8101111 is a deficient number, since it is larger than the sum of its proper divisors (17961).

8101111 is a wasteful number, since it uses less digits than its factorization.

8101111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17960.

The product of its (nonzero) digits is 8, while the sum is 13.

The square root of 8101111 is about 2846.2450702636. The cubic root of 8101111 is about 200.8390665803.

Adding to 8101111 its reverse (1111018), we get a palindrome (9212129).

The spelling of 8101111 in words is "eight million, one hundred one thousand, one hundred eleven".