121660306 has 32 divisors (see below), whose sum is σ = 199987200. Its totient is φ = 55293840.

The previous prime is 121660223. The next prime is 121660349. The reversal of 121660306 is 603066121.

It is a super-3 number, since 3×121660306³ (a number of 25 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163371 + ... + 164113.

It is an arithmetic number, because the mean of its divisors is an integer number (6249600).

Almost surely, 2^121660306 is an apocalyptic number.

121660306 is a deficient number, since it is larger than the sum of its proper divisors (78326894).

121660306 is a wasteful number, since it uses less digits than its factorization.

121660306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 121660306 is about 11029.9730734032. The cubic root of 121660306 is about 495.5068182508.

The spelling of 121660306 in words is "one hundred twenty-one million, six hundred sixty thousand, three hundred six".