222427 has 4 divisors (see below), whose sum is σ = 223416. Its totient is φ = 221440.

The previous prime is 222419. The next prime is 222437. The reversal of 222427 is 724222.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 222427 - 2³ = 222419 is a prime.

It is a Duffinian number.

222427 is a lucky number.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (222437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27 + ... + 667.

It is an arithmetic number, because the mean of its divisors is an integer number (55854).

2²²²⁴²⁷ is an apocalyptic number.

222427 is a deficient number, since it is larger than the sum of its proper divisors (989).

222427 is an equidigital number, since it uses as much as digits as its factorization.

222427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 988.

The product of its digits is 448, while the sum is 19.

The square root of 222427 is about 471.6216704097. The cubic root of 222427 is about 60.5892860116.

Adding to 222427 its reverse (724222), we get a palindrome (946649).

The spelling of 222427 in words is "two hundred twenty-two thousand, four hundred twenty-seven", and thus it is an iban number.