121604411 has 2 divisors, whose sum is σ = 121604412. Its totient is φ = 121604410.

The previous prime is 121604363. The next prime is 121604423. The reversal of 121604411 is 114406121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121604411 - 2¹⁰ = 121603387 is a prime.

It is not a weakly prime, because it can be changed into another prime (121604471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60802205 + 60802206.

It is an arithmetic number, because the mean of its divisors is an integer number (60802206).

Almost surely, 2^121604411 is an apocalyptic number.

121604411 is a deficient number, since it is larger than the sum of its proper divisors (1).

121604411 is an equidigital number, since it uses as much as digits as its factorization.

121604411 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 121604411 is about 11027.4390045921. The cubic root of 121604411 is about 495.4309222384.

The spelling of 121604411 in words is "one hundred twenty-one million, six hundred four thousand, four hundred eleven".