9621717121 has 8 divisors (see below), whose sum is σ = 10386262080. Its totient is φ = 8886022992.

The previous prime is 9621717071. The next prime is 9621717139. The reversal of 9621717121 is 1217171269.

9621717121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 9621717121 - 2⁹ = 9621716609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9621717151) 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, 7212015 + ... + 7213348.

It is an arithmetic number, because the mean of its divisors is an integer number (1298282760).

Almost surely, 2^9621717121 is an apocalyptic number.

It is an amenable number.

9621717121 is a deficient number, since it is larger than the sum of its proper divisors (764544959).

9621717121 is a wasteful number, since it uses less digits than its factorization.

9621717121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14425415.

The product of its digits is 10584, while the sum is 37.

The square root of 9621717121 is about 98090.3518242238. The cubic root of 9621717121 is about 2126.9185622751.

The spelling of 9621717121 in words is "nine billion, six hundred twenty-one million, seven hundred seventeen thousand, one hundred twenty-one".