181210122210941 has 2 divisors, whose sum is σ = 181210122210942. Its totient is φ = 181210122210940.

The previous prime is 181210122210919. The next prime is 181210122210959. The reversal of 181210122210941 is 149012221012181.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106444182518041 + 74765939692900 = 10317179^2 + 8646730^2 .

It is an emirp because it is prime and its reverse (149012221012181) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-181210122210941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (181210122210641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90605061105470 + 90605061105471.

It is an arithmetic number, because the mean of its divisors is an integer number (90605061105471).

Almost surely, 2^{181210122210941} is an apocalyptic number.

It is an amenable number.

181210122210941 is a deficient number, since it is larger than the sum of its proper divisors (1).

181210122210941 is an equidigital number, since it uses as much as digits as its factorization.

181210122210941 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 35.

The spelling of 181210122210941 in words is "one hundred eighty-one trillion, two hundred ten billion, one hundred twenty-two million, two hundred ten thousand, nine hundred forty-one".