2320221161 has 2 divisors, whose sum is σ = 2320221162. Its totient is φ = 2320221160.

The previous prime is 2320221151. The next prime is 2320221173. The reversal of 2320221161 is 1611220232.

2320221161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1825425625 + 494795536 = 42725^2 + 22244^2 .

It is a cyclic number.

It is not a de Polignac number, because 2320221161 - 2⁶ = 2320221097 is a prime.

It is not a weakly prime, because it can be changed into another prime (2320221151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1160110580 + 1160110581.

It is an arithmetic number, because the mean of its divisors is an integer number (1160110581).

Almost surely, 2^2320221161 is an apocalyptic number.

It is an amenable number.

2320221161 is a deficient number, since it is larger than the sum of its proper divisors (1).

2320221161 is an equidigital number, since it uses as much as digits as its factorization.

2320221161 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 20.

The square root of 2320221161 is about 48168.6740631295. The cubic root of 2320221161 is about 1323.8632540184.

Adding to 2320221161 its reverse (1611220232), we get a palindrome (3931441393).

The spelling of 2320221161 in words is "two billion, three hundred twenty million, two hundred twenty-one thousand, one hundred sixty-one".