201145111 has 2 divisors, whose sum is σ = 201145112. Its totient is φ = 201145110.

The previous prime is 201145079. The next prime is 201145151. The reversal of 201145111 is 111541102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201145111 - 2⁵ = 201145079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201145151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100572555 + 100572556.

It is an arithmetic number, because the mean of its divisors is an integer number (100572556).

Almost surely, 2^201145111 is an apocalyptic number.

201145111 is a deficient number, since it is larger than the sum of its proper divisors (1).

201145111 is an equidigital number, since it uses as much as digits as its factorization.

201145111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40, while the sum is 16.

The square root of 201145111 is about 14182.5636258048. The cubic root of 201145111 is about 585.9175325714.

Adding to 201145111 its reverse (111541102), we get a palindrome (312686213).

The spelling of 201145111 in words is "two hundred one million, one hundred forty-five thousand, one hundred eleven".