108221171 has 4 divisors (see below), whose sum is σ = 108246144. Its totient is φ = 108196200.

The previous prime is 108221149. The next prime is 108221219. The reversal of 108221171 is 171122801.

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 108221171 - 2⁶ = 108221107 is a prime.

It is a super-2 number, since 2×108221171² = 23423643705222482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (108221471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4115 + ... + 15276.

It is an arithmetic number, because the mean of its divisors is an integer number (27061536).

Almost surely, 2^108221171 is an apocalyptic number.

108221171 is a deficient number, since it is larger than the sum of its proper divisors (24973).

108221171 is an equidigital number, since it uses as much as digits as its factorization.

108221171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24972.

The product of its (nonzero) digits is 224, while the sum is 23.

The square root of 108221171 is about 10402.9404977631. The cubic root of 108221171 is about 476.5451745618.

Adding to 108221171 its reverse (171122801), we get a palindrome (279343972).

The spelling of 108221171 in words is "one hundred eight million, two hundred twenty-one thousand, one hundred seventy-one".