201211169 has 2 divisors, whose sum is σ = 201211170. Its totient is φ = 201211168.

The previous prime is 201211139. The next prime is 201211187. The reversal of 201211169 is 961112102.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 147379600 + 53831569 = 12140^2 + 7337^2 .

It is a cyclic number.

It is not a de Polignac number, because 201211169 - 2⁸ = 201210913 is a prime.

It is a super-2 number, since 2×201211169² = 80971869060693122, which contains 22 as substring.

It is a Chen prime.

It is equal to p_11142374 and since 201211169 and 11142374 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (201211139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100605584 + 100605585.

It is an arithmetic number, because the mean of its divisors is an integer number (100605585).

Almost surely, 2^201211169 is an apocalyptic number.

It is an amenable number.

201211169 is a deficient number, since it is larger than the sum of its proper divisors (1).

201211169 is an equidigital number, since it uses as much as digits as its factorization.

201211169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 23.

The square root of 201211169 is about 14184.8922801691. The cubic root of 201211169 is about 585.9816658795.

The spelling of 201211169 in words is "two hundred one million, two hundred eleven thousand, one hundred sixty-nine".