121660411 has 2 divisors, whose sum is σ = 121660412. Its totient is φ = 121660410.

The previous prime is 121660397. The next prime is 121660447. The reversal of 121660411 is 114066121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121660411 - 2⁹ = 121659899 is a prime.

It is not a weakly prime, because it can be changed into another prime (121600411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60830205 + 60830206.

It is an arithmetic number, because the mean of its divisors is an integer number (60830206).

Almost surely, 2^121660411 is an apocalyptic number.

121660411 is a deficient number, since it is larger than the sum of its proper divisors (1).

121660411 is an equidigital number, since it uses as much as digits as its factorization.

121660411 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 121660411 is about 11029.9778331600. The cubic root of 121660411 is about 495.5069608012.

The spelling of 121660411 in words is "one hundred twenty-one million, six hundred sixty thousand, four hundred eleven".