20200110222161 has 2 divisors, whose sum is σ = 20200110222162. Its totient is φ = 20200110222160.

The previous prime is 20200110222139. The next prime is 20200110222191. The reversal of 20200110222161 is 16122201100202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11495958143761 + 8704152078400 = 3390569^2 + 2950280^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20200110222161 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (20200110222191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100055111080 + 10100055111081.

It is an arithmetic number, because the mean of its divisors is an integer number (10100055111081).

Almost surely, 2^{20200110222161} is an apocalyptic number.

It is an amenable number.

20200110222161 is a deficient number, since it is larger than the sum of its proper divisors (1).

20200110222161 is an equidigital number, since it uses as much as digits as its factorization.

20200110222161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 20200110222161 its reverse (16122201100202), we get a palindrome (36322311322363).

The spelling of 20200110222161 in words is "twenty trillion, two hundred billion, one hundred ten million, two hundred twenty-two thousand, one hundred sixty-one".