82111107 has 8 divisors (see below), whose sum is σ = 117903184. Its totient is φ = 50529888.

The previous prime is 82111097. The next prime is 82111109. The reversal of 82111107 is 70111128.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 82111107 - 2¹⁴ = 82094723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82111109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1052668 + ... + 1052745.

It is an arithmetic number, because the mean of its divisors is an integer number (14737898).

Almost surely, 2^82111107 is an apocalyptic number.

82111107 is a deficient number, since it is larger than the sum of its proper divisors (35792077).

82111107 is a wasteful number, since it uses less digits than its factorization.

82111107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2105429.

The product of its (nonzero) digits is 112, while the sum is 21.

The square root of 82111107 is about 9061.5179192010. The cubic root of 82111107 is about 434.6442804686.

Adding to 82111107 its sum of digits (21), we get a palindrome (82111128).

The spelling of 82111107 in words is "eighty-two million, one hundred eleven thousand, one hundred seven".