222166027 has 2 divisors, whose sum is σ = 222166028. Its totient is φ = 222166026.

The previous prime is 222166001. The next prime is 222166033. The reversal of 222166027 is 720661222.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222166027 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222165986 and 222166004.

It is not a weakly prime, because it can be changed into another prime (222166127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111083013 + 111083014.

It is an arithmetic number, because the mean of its divisors is an integer number (111083014).

Almost surely, 2^222166027 is an apocalyptic number.

222166027 is a deficient number, since it is larger than the sum of its proper divisors (1).

222166027 is an equidigital number, since it uses as much as digits as its factorization.

222166027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 222166027 is about 14905.2348857708. The cubic root of 222166027 is about 605.6558032253.

The spelling of 222166027 in words is "two hundred twenty-two million, one hundred sixty-six thousand, twenty-seven".