220571 has 12 divisors (see below), whose sum is σ = 256032. Its totient is φ = 188784.

The previous prime is 220559. The next prime is 220573. The reversal of 220571 is 175022.

It is not a de Polignac number, because 220571 - 2¹⁰ = 219547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220573) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4670 + ... + 4716.

It is an arithmetic number, because the mean of its divisors is an integer number (21336).

2²²⁰⁵⁷¹ is an apocalyptic number.

220571 is a deficient number, since it is larger than the sum of its proper divisors (35461).

220571 is a wasteful number, since it uses less digits than its factorization.

220571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98 (or 79 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 17.

The square root of 220571 is about 469.6498695837. The cubic root of 220571 is about 60.4202898078.

Adding to 220571 its reverse (175022), we get a palindrome (395593).

The spelling of 220571 in words is "two hundred twenty thousand, five hundred seventy-one".