121042205 has 8 divisors (see below), whose sum is σ = 148628832. Its totient is φ = 94581648.

The previous prime is 121042189. The next prime is 121042231. The reversal of 121042205 is 502240121.

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 121042205 - 2⁴ = 121042189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 281279 + ... + 281708.

It is an arithmetic number, because the mean of its divisors is an integer number (18578604).

Almost surely, 2^121042205 is an apocalyptic number.

It is an amenable number.

121042205 is a deficient number, since it is larger than the sum of its proper divisors (27586627).

121042205 is an equidigital number, since it uses as much as digits as its factorization.

121042205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563035.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 121042205 is about 11001.9182418340. The cubic root of 121042205 is about 494.6662444225. Note that the first 3 decimals are identical.

Adding to 121042205 its reverse (502240121), we get a palindrome (623282326).

The spelling of 121042205 in words is "one hundred twenty-one million, forty-two thousand, two hundred five".