211422201161 has 2 divisors, whose sum is σ = 211422201162. Its totient is φ = 211422201160.

The previous prime is 211422201131. The next prime is 211422201163. The reversal of 211422201161 is 161102224112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 209265991936 + 2156209225 = 457456^2 + 46435^2 .

It is a cyclic number.

It is not a de Polignac number, because 211422201161 - 2³⁰ = 210348459337 is a prime.

Together with 211422201163, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (211422201163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105711100580 + 105711100581.

It is an arithmetic number, because the mean of its divisors is an integer number (105711100581).

Almost surely, 2^211422201161 is an apocalyptic number.

It is an amenable number.

211422201161 is a deficient number, since it is larger than the sum of its proper divisors (1).

211422201161 is an equidigital number, since it uses as much as digits as its factorization.

211422201161 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 211422201161 its reverse (161102224112), we get a palindrome (372524425273).

The spelling of 211422201161 in words is "two hundred eleven billion, four hundred twenty-two million, two hundred one thousand, one hundred sixty-one".