172211 has 6 divisors (see below), whose sum is σ = 186660. Its totient is φ = 158808.

The previous prime is 172199. The next prime is 172213. The reversal of 172211 is 112271.

It is not a de Polignac number, because 172211 - 2⁶ = 172147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172213) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 341 + ... + 678.

It is an arithmetic number, because the mean of its divisors is an integer number (31110).

2¹⁷²²¹¹ is an apocalyptic number.

172211 is a deficient number, since it is larger than the sum of its proper divisors (14449).

172211 is a wasteful number, since it uses less digits than its factorization.

172211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045 (or 1032 counting only the distinct ones).

The product of its digits is 28, while the sum is 14.

The square root of 172211 is about 414.9831321873. The cubic root of 172211 is about 55.6357093381.

Adding to 172211 its sum of digits (14), we get a square (172225 = 415²).

Adding to 172211 its reverse (112271), we get a palindrome (284482).

It can be divided in two parts, 172 and 211, that added together give a palindrome (383).

The spelling of 172211 in words is "one hundred seventy-two thousand, two hundred eleven", and thus it is an iban number.