2171227 has 4 divisors (see below), whose sum is σ = 2177280. Its totient is φ = 2165176.

The previous prime is 2171219. The next prime is 2171231. The reversal of 2171227 is 7221712.

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 2171227 - 2³ = 2171219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2171198 and 2171207.

It is not an unprimeable number, because it can be changed into a prime (2171527) 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, 2452 + ... + 3217.

It is an arithmetic number, because the mean of its divisors is an integer number (544320).

2^2171227 is an apocalyptic number.

2171227 is a deficient number, since it is larger than the sum of its proper divisors (6053).

2171227 is an equidigital number, since it uses as much as digits as its factorization.

2171227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6052.

The product of its digits is 392, while the sum is 22.

The square root of 2171227 is about 1473.5083983473. The cubic root of 2171227 is about 129.4896559569.

Adding to 2171227 its reverse (7221712), we get a palindrome (9392939).

It can be divided in two parts, 217 and 1227, that added together give a square (1444 = 38²).

The spelling of 2171227 in words is "two million, one hundred seventy-one thousand, two hundred twenty-seven".