121241189 has 2 divisors, whose sum is σ = 121241190. Its totient is φ = 121241188.

The previous prime is 121241149. The next prime is 121241213. The reversal of 121241189 is 981142121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115562500 + 5678689 = 10750^2 + 2383^2 .

It is a cyclic number.

It is not a de Polignac number, because 121241189 - 2¹² = 121237093 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121241149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60620594 + 60620595.

It is an arithmetic number, because the mean of its divisors is an integer number (60620595).

Almost surely, 2^121241189 is an apocalyptic number.

It is an amenable number.

121241189 is a deficient number, since it is larger than the sum of its proper divisors (1).

121241189 is an equidigital number, since it uses as much as digits as its factorization.

121241189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 29.

The square root of 121241189 is about 11010.9576786036. The cubic root of 121241189 is about 494.9371603391.

The spelling of 121241189 in words is "one hundred twenty-one million, two hundred forty-one thousand, one hundred eighty-nine".