220110110161 has 2 divisors, whose sum is σ = 220110110162. Its totient is φ = 220110110160.

The previous prime is 220110110159. The next prime is 220110110167. The reversal of 220110110161 is 161011011022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 201202485136 + 18907625025 = 448556^2 + 137505^2 .

It is a cyclic number.

It is not a de Polignac number, because 220110110161 - 2¹ = 220110110159 is a prime.

It is a super-3 number, since 3×220110110161³ (a number of 35 digits) contains 333 as substring.

Together with 220110110159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (220110110167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110055055080 + 110055055081.

It is an arithmetic number, because the mean of its divisors is an integer number (110055055081).

Almost surely, 2^220110110161 is an apocalyptic number.

It is an amenable number.

220110110161 is a deficient number, since it is larger than the sum of its proper divisors (1).

220110110161 is an equidigital number, since it uses as much as digits as its factorization.

220110110161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 220110110161 its reverse (161011011022), we get a palindrome (381121121183).

The spelling of 220110110161 in words is "two hundred twenty billion, one hundred ten million, one hundred ten thousand, one hundred sixty-one".