222302161 has 2 divisors, whose sum is σ = 222302162. Its totient is φ = 222302160.

The previous prime is 222302053. The next prime is 222302177. The reversal of 222302161 is 161203222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 175721536 + 46580625 = 13256^2 + 6825^2 .

It is a cyclic number.

It is not a de Polignac number, because 222302161 - 2¹⁵ = 222269393 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (222392161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111151080 + 111151081.

It is an arithmetic number, because the mean of its divisors is an integer number (111151081).

Almost surely, 2^222302161 is an apocalyptic number.

It is an amenable number.

222302161 is a deficient number, since it is larger than the sum of its proper divisors (1).

222302161 is an equidigital number, since it uses as much as digits as its factorization.

222302161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 222302161 is about 14909.8008370333. The cubic root of 222302161 is about 605.7794847699.

Adding to 222302161 its reverse (161203222), we get a palindrome (383505383).

The spelling of 222302161 in words is "two hundred twenty-two million, three hundred two thousand, one hundred sixty-one".