82122171 has 16 divisors (see below), whose sum is σ = 113986560. Its totient is φ = 52526880.

The previous prime is 82122163. The next prime is 82122233. The reversal of 82122171 is 17122128.

It is not a de Polignac number, because 82122171 - 2³ = 82122163 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82122071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11286 + ... + 17076.

It is an arithmetic number, because the mean of its divisors is an integer number (7124160).

Almost surely, 2^82122171 is an apocalyptic number.

82122171 is a deficient number, since it is larger than the sum of its proper divisors (31864389).

82122171 is a wasteful number, since it uses less digits than its factorization.

82122171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5986.

The product of its digits is 448, while the sum is 24.

The square root of 82122171 is about 9062.1283923811. The cubic root of 82122171 is about 434.6638015319.

Adding to 82122171 its reverse (17122128), we get a palindrome (99244299).

The spelling of 82122171 in words is "eighty-two million, one hundred twenty-two thousand, one hundred seventy-one".