210111201121201 has 2 divisors, whose sum is σ = 210111201121202. Its totient is φ = 210111201121200.

The previous prime is 210111201121183. The next prime is 210111201121277. The reversal of 210111201121201 is 102121102111012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 204806581434225 + 5304619686976 = 14311065^2 + 2303176^2 .

It is a cyclic number.

It is not a de Polignac number, because 210111201121201 - 2³³ = 210102611186609 is a prime.

It is not a weakly prime, because it can be changed into another prime (210111201161201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105055600560600 + 105055600560601.

It is an arithmetic number, because the mean of its divisors is an integer number (105055600560601).

Almost surely, 2^{210111201121201} is an apocalyptic number.

It is an amenable number.

210111201121201 is a deficient number, since it is larger than the sum of its proper divisors (1).

210111201121201 is an equidigital number, since it uses as much as digits as its factorization.

210111201121201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 210111201121201 its reverse (102121102111012), we get a palindrome (312232303232213).

The spelling of 210111201121201 in words is "two hundred ten trillion, one hundred eleven billion, two hundred one million, one hundred twenty-one thousand, two hundred one".