122181 has 8 divisors (see below), whose sum is σ = 164640. Its totient is φ = 80592.

The previous prime is 122173. The next prime is 122201. The reversal of 122181 is 181221.

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

It is not a de Polignac number, because 122181 - 2³ = 122173 is a prime.

It is a super-2 number, since 2×122181² = 29856393522, which contains 22 as substring.

It is an Ulam number.

122181 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 122181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 271 + ... + 563.

It is an arithmetic number, because the mean of its divisors is an integer number (20580).

2¹²²¹⁸¹ is an apocalyptic number.

It is an amenable number.

122181 is a deficient number, since it is larger than the sum of its proper divisors (42459).

122181 is a wasteful number, since it uses less digits than its factorization.

122181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435.

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

The square root of 122181 is about 349.5439886481. The cubic root of 122181 is about 49.6212718766.

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

The spelling of 122181 in words is "one hundred twenty-two thousand, one hundred eighty-one".