201118133 has 2 divisors, whose sum is σ = 201118134. Its totient is φ = 201118132.

The previous prime is 201118129. The next prime is 201118147. The reversal of 201118133 is 331811102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 155176849 + 45941284 = 12457^2 + 6778^2 .

It is a cyclic number.

It is not a de Polignac number, because 201118133 - 2² = 201118129 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201118153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100559066 + 100559067.

It is an arithmetic number, because the mean of its divisors is an integer number (100559067).

Almost surely, 2^201118133 is an apocalyptic number.

It is an amenable number.

201118133 is a deficient number, since it is larger than the sum of its proper divisors (1).

201118133 is an equidigital number, since it uses as much as digits as its factorization.

201118133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 201118133 is about 14181.6124964688. The cubic root of 201118133 is about 585.8913365748.

Adding to 201118133 its reverse (331811102), we get a palindrome (532929235).

The spelling of 201118133 in words is "two hundred one million, one hundred eighteen thousand, one hundred thirty-three".