2220171 has 8 divisors (see below), whose sum is σ = 2967360. Its totient is φ = 1476552.

The previous prime is 2220157. The next prime is 2220187. The reversal of 2220171 is 1710222.

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

It is not a de Polignac number, because 2220171 - 2¹⁴ = 2203787 is a prime.

It is a super-4 number, since 4×2220171⁴ (a number of 26 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2220171.

It is not an unprimeable number, because it can be changed into a prime (2220151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1416 + ... + 2538.

It is an arithmetic number, because the mean of its divisors is an integer number (370920).

2^2220171 is an apocalyptic number.

2220171 is a deficient number, since it is larger than the sum of its proper divisors (747189).

2220171 is a wasteful number, since it uses less digits than its factorization.

2220171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1785.

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 2220171 is about 1490.0238253129. The cubic root of 2220171 is about 130.4554243612.

Adding to 2220171 its reverse (1710222), we get a palindrome (3930393).

The spelling of 2220171 in words is "two million, two hundred twenty thousand, one hundred seventy-one".