120222161 has 2 divisors, whose sum is σ = 120222162. Its totient is φ = 120222160.

The previous prime is 120222149. The next prime is 120222203. The reversal of 120222161 is 161222021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117180625 + 3041536 = 10825^2 + 1744^2 .

It is a cyclic number.

It is not a de Polignac number, because 120222161 - 2¹⁰ = 120221137 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (123222161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60111080 + 60111081.

It is an arithmetic number, because the mean of its divisors is an integer number (60111081).

Almost surely, 2^120222161 is an apocalyptic number.

It is an amenable number.

120222161 is a deficient number, since it is larger than the sum of its proper divisors (1).

120222161 is an equidigital number, since it uses as much as digits as its factorization.

120222161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 120222161 is about 10964.5866771165. The cubic root of 120222161 is about 493.5466139626.

Adding to 120222161 its reverse (161222021), we get a palindrome (281444182).

The spelling of 120222161 in words is "one hundred twenty million, two hundred twenty-two thousand, one hundred sixty-one".