201111121221169 has 2 divisors, whose sum is σ = 201111121221170. Its totient is φ = 201111121221168.

The previous prime is 201111121221089. The next prime is 201111121221229. The reversal of 201111121221169 is 961122121111102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118977919290000 + 82133201931169 = 10907700^2 + 9062737^2 .

It is a cyclic number.

It is not a de Polignac number, because 201111121221169 - 2¹¹ = 201111121219121 is a prime.

It is a super-2 number, since 2×201111121221169² (a number of 29 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 201111121221169.

It is not a weakly prime, because it can be changed into another prime (201111121225169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100555560610584 + 100555560610585.

It is an arithmetic number, because the mean of its divisors is an integer number (100555560610585).

Almost surely, 2^{201111121221169} is an apocalyptic number.

It is an amenable number.

201111121221169 is a deficient number, since it is larger than the sum of its proper divisors (1).

201111121221169 is an equidigital number, since it uses as much as digits as its factorization.

201111121221169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 31.

The spelling of 201111121221169 in words is "two hundred one trillion, one hundred eleven billion, one hundred twenty-one million, two hundred twenty-one thousand, one hundred sixty-nine".