121866010 has 16 divisors (see below), whose sum is σ = 250695936. Its totient is φ = 41782608.

The previous prime is 121866001. The next prime is 121866023. The reversal of 121866010 is 10668121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 870402 + ... + 870541.

It is an arithmetic number, because the mean of its divisors is an integer number (15668496).

Almost surely, 2^121866010 is an apocalyptic number.

121866010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121866010 is an abundant number, since it is smaller than the sum of its proper divisors (128829926).

121866010 is a wasteful number, since it uses less digits than its factorization.

121866010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1740957.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 121866010 is about 11039.2939085795. The cubic root of 121866010 is about 495.7859296693.

The spelling of 121866010 in words is "one hundred twenty-one million, eight hundred sixty-six thousand, ten".