2210161 has 2 divisors, whose sum is σ = 2210162. Its totient is φ = 2210160.

The previous prime is 2210147. The next prime is 2210171. The reversal of 2210161 is 1610122.

2210161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2002225 + 207936 = 1415^2 + 456^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2210161 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2210141) 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, 1105080 + 1105081.

It is an arithmetic number, because the mean of its divisors is an integer number (1105081).

2^2210161 is an apocalyptic number.

It is an amenable number.

2210161 is a deficient number, since it is larger than the sum of its proper divisors (1).

2210161 is an equidigital number, since it uses as much as digits as its factorization.

2210161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 2210161 is about 1486.6610239056. The cubic root of 2210161 is about 130.2590691725.

Adding to 2210161 its reverse (1610122), we get a palindrome (3820283).

The spelling of 2210161 in words is "two million, two hundred ten thousand, one hundred sixty-one".