121604171 has 16 divisors (see below), whose sum is σ = 134678880. Its totient is φ = 109105920.

The previous prime is 121604167. The next prime is 121604177. The reversal of 121604171 is 171406121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 121604171 - 2² = 121604167 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121604177) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69716 + ... + 71438.

It is an arithmetic number, because the mean of its divisors is an integer number (8417430).

Almost surely, 2^121604171 is an apocalyptic number.

121604171 is a deficient number, since it is larger than the sum of its proper divisors (13074709).

121604171 is a wasteful number, since it uses less digits than its factorization.

121604171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1886.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 121604171 is about 11027.4281226404. The cubic root of 121604171 is about 495.4305963087.

The spelling of 121604171 in words is "one hundred twenty-one million, six hundred four thousand, one hundred seventy-one".