201111121221089 has 2 divisors, whose sum is σ = 201111121221090. Its totient is φ = 201111121221088.

The previous prime is 201111121221071. The next prime is 201111121221169. The reversal of 201111121221089 is 980122121111102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129019270582225 + 72091850638864 = 11358665^2 + 8490692^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201111121221089 is a prime.

It is not a weakly prime, because it can be changed into another prime (201111121221889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100555560610544 + 100555560610545.

It is an arithmetic number, because the mean of its divisors is an integer number (100555560610545).

Almost surely, 2^{201111121221089} is an apocalyptic number.

It is an amenable number.

201111121221089 is a deficient number, since it is larger than the sum of its proper divisors (1).

201111121221089 is an equidigital number, since it uses as much as digits as its factorization.

201111121221089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 32.

The spelling of 201111121221089 in words is "two hundred one trillion, one hundred eleven billion, one hundred twenty-one million, two hundred twenty-one thousand, eighty-nine".