121181 has 2 divisors, whose sum is σ = 121182. Its totient is φ = 121180.

The previous prime is 121171. The next prime is 121189. The reversal of 121181 is 181121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116281 + 4900 = 341^2 + 70^2 .

It is a cyclic number.

It is not a de Polignac number, because 121181 - 2¹⁰ = 120157 is a prime.

It is a super-2 number, since 2×121181² = 29369669522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 121181.

It is not a weakly prime, because it can be changed into another prime (121189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60590 + 60591.

It is an arithmetic number, because the mean of its divisors is an integer number (60591).

2¹²¹¹⁸¹ is an apocalyptic number.

It is an amenable number.

121181 is a deficient number, since it is larger than the sum of its proper divisors (1).

121181 is an equidigital number, since it uses as much as digits as its factorization.

121181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16, while the sum is 14.

The square root of 121181 is about 348.1106146040. The cubic root of 121181 is about 49.4855244548.

The spelling of 121181 in words is "one hundred twenty-one thousand, one hundred eighty-one".