211118816341 has 2 divisors, whose sum is σ = 211118816342. Its totient is φ = 211118816340.

The previous prime is 211118816327. The next prime is 211118816429. The reversal of 211118816341 is 143618811112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 197229251025 + 13889565316 = 444105^2 + 117854^2 .

It is a cyclic number.

It is not a de Polignac number, because 211118816341 - 2⁵ = 211118816309 is a prime.

It is a super-2 number, since 2×211118816341² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 211118816341.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211118814341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105559408170 + 105559408171.

It is an arithmetic number, because the mean of its divisors is an integer number (105559408171).

Almost surely, 2^211118816341 is an apocalyptic number.

It is an amenable number.

211118816341 is a deficient number, since it is larger than the sum of its proper divisors (1).

211118816341 is an equidigital number, since it uses as much as digits as its factorization.

211118816341 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9216, while the sum is 37.

The spelling of 211118816341 in words is "two hundred eleven billion, one hundred eighteen million, eight hundred sixteen thousand, three hundred forty-one".