121716170 has 8 divisors (see below), whose sum is σ = 219089124. Its totient is φ = 48686464.

The previous prime is 121716151. The next prime is 121716173. The reversal of 121716170 is 71617121.

It can be written as a sum of positive squares in 2 ways, for example, as 120714169 + 1002001 = 10987^2 + 1001^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121716173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6085799 + ... + 6085818.

Almost surely, 2^121716170 is an apocalyptic number.

121716170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121716170 is a deficient number, since it is larger than the sum of its proper divisors (97372954).

121716170 is a wasteful number, since it uses less digits than its factorization.

121716170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12171624.

The product of its (nonzero) digits is 588, while the sum is 26.

The square root of 121716170 is about 11032.5051552220. The cubic root of 121716170 is about 495.5826489470.

The spelling of 121716170 in words is "one hundred twenty-one million, seven hundred sixteen thousand, one hundred seventy".