121205470 has 16 divisors (see below), whose sum is σ = 221868720. Its totient is φ = 47660224.

The previous prime is 121205467. The next prime is 121205489. The reversal of 121205470 is 74502121.

It is a happy 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, 102127 + ... + 103306.

It is an arithmetic number, because the mean of its divisors is an integer number (13866795).

Almost surely, 2^121205470 is an apocalyptic number.

121205470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121205470 is a deficient number, since it is larger than the sum of its proper divisors (100663250).

121205470 is a wasteful number, since it uses less digits than its factorization.

121205470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205499.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 121205470 is about 11009.3355839487. The cubic root of 121205470 is about 494.8885509048. Note that the first 3 decimals are identical.

Adding to 121205470 its reverse (74502121), we get a palindrome (195707591).

The spelling of 121205470 in words is "one hundred twenty-one million, two hundred five thousand, four hundred seventy".