171121133 has 4 divisors (see below), whose sum is σ = 181187100. Its totient is φ = 161055168.

The previous prime is 171121129. The next prime is 171121177. The reversal of 171121133 is 331121171.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 331121171 = 2647 ⋅125093.

It can be written as a sum of positive squares in 2 ways, for example, as 89453764 + 81667369 = 9458^2 + 9037^2 .

It is a cyclic number.

It is not a de Polignac number, because 171121133 - 2² = 171121129 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 (171121193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5032958 + ... + 5032991.

It is an arithmetic number, because the mean of its divisors is an integer number (45296775).

Almost surely, 2^171121133 is an apocalyptic number.

It is an amenable number.

171121133 is a deficient number, since it is larger than the sum of its proper divisors (10065967).

171121133 is a wasteful number, since it uses less digits than its factorization.

171121133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10065966.

The product of its digits is 126, while the sum is 20.

The square root of 171121133 is about 13081.3276466879. The cubic root of 171121133 is about 555.1809414629.

The spelling of 171121133 in words is "one hundred seventy-one million, one hundred twenty-one thousand, one hundred thirty-three".