211210022202161 has 2 divisors, whose sum is σ = 211210022202162. Its totient is φ = 211210022202160.

The previous prime is 211210022202149. The next prime is 211210022202199. The reversal of 211210022202161 is 161202220012112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 199926704527936 + 11283317674225 = 14139544^2 + 3359065^2 .

It is a cyclic number.

It is not a de Polignac number, because 211210022202161 - 2⁶ = 211210022202097 is a prime.

It is not a weakly prime, because it can be changed into another prime (211210022207161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105605011101080 + 105605011101081.

It is an arithmetic number, because the mean of its divisors is an integer number (105605011101081).

Almost surely, 2^{211210022202161} is an apocalyptic number.

It is an amenable number.

211210022202161 is a deficient number, since it is larger than the sum of its proper divisors (1).

211210022202161 is an equidigital number, since it uses as much as digits as its factorization.

211210022202161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 23.

Adding to 211210022202161 its reverse (161202220012112), we get a palindrome (372412242214273).

The spelling of 211210022202161 in words is "two hundred eleven trillion, two hundred ten billion, twenty-two million, two hundred two thousand, one hundred sixty-one".