202122112110161 has 2 divisors, whose sum is σ = 202122112110162. Its totient is φ = 202122112110160.

The previous prime is 202122112110151. The next prime is 202122112110209. The reversal of 202122112110161 is 161011211221202.

202122112110161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 201446500444225 + 675611665936 = 14193185^2 + 821956^2 .

It is a cyclic number.

It is not a de Polignac number, because 202122112110161 - 2²² = 202122107915857 is a prime.

It is not a weakly prime, because it can be changed into another prime (202122112110101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101061056055080 + 101061056055081.

It is an arithmetic number, because the mean of its divisors is an integer number (101061056055081).

Almost surely, 2^{202122112110161} is an apocalyptic number.

It is an amenable number.

202122112110161 is a deficient number, since it is larger than the sum of its proper divisors (1).

202122112110161 is an equidigital number, since it uses as much as digits as its factorization.

202122112110161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 23.

Adding to 202122112110161 its reverse (161011211221202), we get a palindrome (363133323331363).

The spelling of 202122112110161 in words is "two hundred two trillion, one hundred twenty-two billion, one hundred twelve million, one hundred ten thousand, one hundred sixty-one".