121252205 has 32 divisors (see below), whose sum is σ = 161187840. Its totient is φ = 87151680.

The previous prime is 121252189. The next prime is 121252207. The reversal of 121252205 is 502252121.

It is a happy number.

It is not a de Polignac number, because 121252205 - 2⁴ = 121252189 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121252207) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 460904 + ... + 461166.

It is an arithmetic number, because the mean of its divisors is an integer number (5037120).

Almost surely, 2^121252205 is an apocalyptic number.

It is an amenable number.

121252205 is a deficient number, since it is larger than the sum of its proper divisors (39935635).

121252205 is a wasteful number, since it uses less digits than its factorization.

121252205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 121252205 is about 11011.4578962097. The cubic root of 121252205 is about 494.9521499167.

The spelling of 121252205 in words is "one hundred twenty-one million, two hundred fifty-two thousand, two hundred five".