211346006161 has 2 divisors, whose sum is σ = 211346006162. Its totient is φ = 211346006160.

The previous prime is 211346006159. The next prime is 211346006173. The reversal of 211346006161 is 161600643112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 173488910400 + 37857095761 = 416520^2 + 194569^2 .

It is a cyclic number.

It is not a de Polignac number, because 211346006161 - 2¹ = 211346006159 is a prime.

Together with 211346006159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (211346006191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105673003080 + 105673003081.

It is an arithmetic number, because the mean of its divisors is an integer number (105673003081).

Almost surely, 2^211346006161 is an apocalyptic number.

It is an amenable number.

211346006161 is a deficient number, since it is larger than the sum of its proper divisors (1).

211346006161 is an equidigital number, since it uses as much as digits as its factorization.

211346006161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 31.

Adding to 211346006161 its reverse (161600643112), we get a palindrome (372946649273).

The spelling of 211346006161 in words is "two hundred eleven billion, three hundred forty-six million, six thousand, one hundred sixty-one".