121189 has 2 divisors, whose sum is σ = 121190. Its totient is φ = 121188.

The previous prime is 121181. The next prime is 121229. The reversal of 121189 is 981121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116964 + 4225 = 342^2 + 65^2 .

It is a cyclic number.

It is not a de Polignac number, because 121189 - 2³ = 121181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60594 + 60595.

It is an arithmetic number, because the mean of its divisors is an integer number (60595).

2¹²¹¹⁸⁹ is an apocalyptic number.

It is an amenable number.

121189 is a deficient number, since it is larger than the sum of its proper divisors (1).

121189 is an equidigital number, since it uses as much as digits as its factorization.

121189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144, while the sum is 22.

The square root of 121189 is about 348.1221050149. The cubic root of 121189 is about 49.4866133920.

The spelling of 121189 in words is "one hundred twenty-one thousand, one hundred eighty-nine".