2211210161 has 2 divisors, whose sum is σ = 2211210162. Its totient is φ = 2211210160.

The previous prime is 2211210151. The next prime is 2211210163. The reversal of 2211210161 is 1610121122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1184392225 + 1026817936 = 34415^2 + 32044^2 .

It is a cyclic number.

It is not a de Polignac number, because 2211210161 - 2¹⁸ = 2210948017 is a prime.

It is a super-2 number, since 2×2211210161² = 9778900752219291842, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 2211210163, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2211210163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105605080 + 1105605081.

It is an arithmetic number, because the mean of its divisors is an integer number (1105605081).

Almost surely, 2^2211210161 is an apocalyptic number.

It is an amenable number.

2211210161 is a deficient number, since it is larger than the sum of its proper divisors (1).

2211210161 is an equidigital number, since it uses as much as digits as its factorization.

2211210161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 17.

The square root of 2211210161 is about 47023.5064728270. The cubic root of 2211210161 is about 1302.7967719102.

Adding to 2211210161 its reverse (1610121122), we get a palindrome (3821331283).

The spelling of 2211210161 in words is "two billion, two hundred eleven million, two hundred ten thousand, one hundred sixty-one".