222011173 has 2 divisors, whose sum is σ = 222011174. Its totient is φ = 222011172.

The previous prime is 222011171. The next prime is 222011189. The reversal of 222011173 is 371110222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 191075329 + 30935844 = 13823^2 + 5562^2 .

It is a cyclic number.

It is not a de Polignac number, because 222011173 - 2¹ = 222011171 is a prime.

Together with 222011171, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 222011173.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222011171) 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, 111005586 + 111005587.

It is an arithmetic number, because the mean of its divisors is an integer number (111005587).

Almost surely, 2^222011173 is an apocalyptic number.

It is an amenable number.

222011173 is a deficient number, since it is larger than the sum of its proper divisors (1).

222011173 is an equidigital number, since it uses as much as digits as its factorization.

222011173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 222011173 is about 14900.0393623641. The cubic root of 222011173 is about 605.5150525981.

Adding to 222011173 its reverse (371110222), we get a palindrome (593121395).

The spelling of 222011173 in words is "two hundred twenty-two million, eleven thousand, one hundred seventy-three".