121171205 has 8 divisors (see below), whose sum is σ = 148787232. Its totient is φ = 94682448.

The previous prime is 121171163. The next prime is 121171207. The reversal of 121171205 is 502171121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121171205 - 2¹⁴ = 121154821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121171207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 281579 + ... + 282008.

It is an arithmetic number, because the mean of its divisors is an integer number (18598404).

Almost surely, 2^121171205 is an apocalyptic number.

It is an amenable number.

121171205 is a deficient number, since it is larger than the sum of its proper divisors (27616027).

121171205 is an equidigital number, since it uses as much as digits as its factorization.

121171205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563635.

The product of its (nonzero) digits is 140, while the sum is 20.

The square root of 121171205 is about 11007.7792946625. The cubic root of 121171205 is about 494.8419112209.

The spelling of 121171205 in words is "one hundred twenty-one million, one hundred seventy-one thousand, two hundred five".