2172227 has 2 divisors, whose sum is σ = 2172228. Its totient is φ = 2172226.

The previous prime is 2172211. The next prime is 2172229. The reversal of 2172227 is 7222712.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2172227 - 2⁴ = 2172211 is a prime.

Together with 2172229, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p₁₆₀₇₈₁ and since 2172227 and 160781 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (2172229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1086113 + 1086114.

It is an arithmetic number, because the mean of its divisors is an integer number (1086114).

2^2172227 is an apocalyptic number.

2172227 is a deficient number, since it is larger than the sum of its proper divisors (1).

2172227 is an equidigital number, since it uses as much as digits as its factorization.

2172227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 784, while the sum is 23.

The square root of 2172227 is about 1473.8476854818. The cubic root of 2172227 is about 129.5095325491.

Adding to 2172227 its reverse (7222712), we get a palindrome (9394939).

The spelling of 2172227 in words is "two million, one hundred seventy-two thousand, two hundred twenty-seven".