181122 has 8 divisors (see below), whose sum is σ = 362256. Its totient is φ = 60372.

The previous prime is 181087. The next prime is 181123. The reversal of 181122 is 221181.

It is a sphenic number, since it is the product of 3 distinct primes.

181122 is an admirable number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 181122.

It is not an unprimeable number, because it can be changed into a prime (181123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15088 + ... + 15099.

It is an arithmetic number, because the mean of its divisors is an integer number (45282).

2¹⁸¹¹²² is an apocalyptic number.

181122 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

181122 is a wasteful number, since it uses less digits than its factorization.

181122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30192.

The product of its digits is 32, while the sum is 15.

The square root of 181122 is about 425.5843042219. The cubic root of 181122 is about 56.5792346422.

It can be divided in two parts, 181 and 122, that added together give a palindrome (303).

The spelling of 181122 in words is "one hundred eighty-one thousand, one hundred twenty-two".