220071 has 8 divisors (see below), whose sum is σ = 296560. Its totient is φ = 145152.

The previous prime is 220063. The next prime is 220123. The reversal of 220071 is 170022.

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

It is not a de Polignac number, because 220071 - 2³ = 220063 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220021) 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, 10 + ... + 663.

It is an arithmetic number, because the mean of its divisors is an integer number (37070).

2²²⁰⁰⁷¹ is an apocalyptic number.

220071 is a deficient number, since it is larger than the sum of its proper divisors (76489).

220071 is a wasteful number, since it uses less digits than its factorization.

220071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785.

The product of its (nonzero) digits is 28, while the sum is 12.

The square root of 220071 is about 469.1172561311. The cubic root of 220071 is about 60.3746008144.

Adding to 220071 its reverse (170022), we get a palindrome (390093).

The spelling of 220071 in words is "two hundred twenty thousand, seventy-one", and thus it is an iban number.