201110102220161 has 2 divisors, whose sum is σ = 201110102220162. Its totient is φ = 201110102220160.

The previous prime is 201110102220037. The next prime is 201110102220197. The reversal of 201110102220161 is 161022201011102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 195053876536561 + 6056225683600 = 13966169^2 + 2460940^2 .

It is a cyclic number.

It is not a de Polignac number, because 201110102220161 - 2⁴⁶ = 130741358042497 is a prime.

It is not a weakly prime, because it can be changed into another prime (201110102820161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100555051110080 + 100555051110081.

It is an arithmetic number, because the mean of its divisors is an integer number (100555051110081).

Almost surely, 2^{201110102220161} is an apocalyptic number.

It is an amenable number.

201110102220161 is a deficient number, since it is larger than the sum of its proper divisors (1).

201110102220161 is an equidigital number, since it uses as much as digits as its factorization.

201110102220161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 201110102220161 its reverse (161022201011102), we get a palindrome (362132303231263).

The spelling of 201110102220161 in words is "two hundred one trillion, one hundred ten billion, one hundred two million, two hundred twenty thousand, one hundred sixty-one".