222421027 has 2 divisors, whose sum is σ = 222421028. Its totient is φ = 222421026.

The previous prime is 222421021. The next prime is 222421093. The reversal of 222421027 is 720124222.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 222421027 - 2⁷ = 222420899 is a prime.

It is a super-2 number, since 2×222421027² = 98942226503469458, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 222420989 and 222421007.

It is not a weakly prime, because it can be changed into another prime (222421021) 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 as a sum of consecutive naturals, namely, 111210513 + 111210514.

It is an arithmetic number, because the mean of its divisors is an integer number (111210514).

Almost surely, 2^222421027 is an apocalyptic number.

222421027 is a deficient number, since it is larger than the sum of its proper divisors (1).

222421027 is an equidigital number, since it uses as much as digits as its factorization.

222421027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 22.

The square root of 222421027 is about 14913.7864742660. The cubic root of 222421027 is about 605.8874365680.

Adding to 222421027 its reverse (720124222), we get a palindrome (942545249).

The spelling of 222421027 in words is "two hundred twenty-two million, four hundred twenty-one thousand, twenty-seven".