20022110161 has 2 divisors, whose sum is σ = 20022110162. Its totient is φ = 20022110160.

The previous prime is 20022110159. The next prime is 20022110201. The reversal of 20022110161 is 16101122002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15392124225 + 4629985936 = 124065^2 + 68044^2 .

It is a cyclic number.

It is not a de Polignac number, because 20022110161 - 2¹ = 20022110159 is a prime.

Together with 20022110159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20022110261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10011055080 + 10011055081.

It is an arithmetic number, because the mean of its divisors is an integer number (10011055081).

Almost surely, 2^20022110161 is an apocalyptic number.

It is an amenable number.

20022110161 is a deficient number, since it is larger than the sum of its proper divisors (1).

20022110161 is an equidigital number, since it uses as much as digits as its factorization.

20022110161 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 16.

Adding to 20022110161 its reverse (16101122002), we get a palindrome (36123232163).

The spelling of 20022110161 in words is "twenty billion, twenty-two million, one hundred ten thousand, one hundred sixty-one".