121896170 has 16 divisors (see below), whose sum is σ = 239359968. Its totient is φ = 44325840.

The previous prime is 121896149. The next prime is 121896179. The reversal of 121896170 is 71698121.

It is a zygodrome in base 3.

It is a self number, because there is not a number n which added to its sum of digits gives 121896170.

It is not an unprimeable number, because it can be changed into a prime (121896179) by changing a digit.

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, 553964 + ... + 554183.

It is an arithmetic number, because the mean of its divisors is an integer number (14959998).

Almost surely, 2^121896170 is an apocalyptic number.

121896170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121896170 is a deficient number, since it is larger than the sum of its proper divisors (117463798).

121896170 is a wasteful number, since it uses less digits than its factorization.

121896170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1108165.

The product of its (nonzero) digits is 6048, while the sum is 35.

The square root of 121896170 is about 11040.6598534689. The cubic root of 121896170 is about 495.8268261431.

The spelling of 121896170 in words is "one hundred twenty-one million, eight hundred ninety-six thousand, one hundred seventy".