201111133 has 4 divisors (see below), whose sum is σ = 201303900. Its totient is φ = 200918368.

The previous prime is 201111107. The next prime is 201111161. The reversal of 201111133 is 331111102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 135792409 + 65318724 = 11653^2 + 8082^2 .

It is a cyclic number.

It is not a de Polignac number, because 201111133 - 2¹⁷ = 200980061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201118133) 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 in 3 ways as a sum of consecutive naturals, for example, 94810 + ... + 96907.

It is an arithmetic number, because the mean of its divisors is an integer number (50325975).

Almost surely, 2^201111133 is an apocalyptic number.

It is an amenable number.

201111133 is a deficient number, since it is larger than the sum of its proper divisors (192767).

201111133 is a wasteful number, since it uses less digits than its factorization.

201111133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192766.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 201111133 is about 14181.3656958701. The cubic root of 201111133 is about 585.8845390989.

Adding to 201111133 its reverse (331111102), we get a palindrome (532222235).

The spelling of 201111133 in words is "two hundred one million, one hundred eleven thousand, one hundred thirty-three".