9821117252 has 48 divisors (see below), whose sum is σ = 18232704000. Its totient is φ = 4615950240.

The previous prime is 9821117249. The next prime is 9821117261. The reversal of 9821117252 is 2527111289.

It is a Harshad number since it is a multiple of its sum of digits (38).

9821117252 is a Rhonda number in base 10.

Its product of digits (20160) is a multiple of the sum of its prime factors (2016).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7606727 + ... + 7608017.

It is an arithmetic number, because the mean of its divisors is an integer number (379848000).

Almost surely, 2^9821117252 is an apocalyptic number.

It is an amenable number.

9821117252 is a deficient number, since it is larger than the sum of its proper divisors (8411586748).

9821117252 is a wasteful number, since it uses less digits than its factorization.

9821117252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2016 (or 2014 counting only the distinct ones).

The product of its digits is 20160, while the sum is 38.

The square root of 9821117252 is about 99101.5501997824. The cubic root of 9821117252 is about 2141.5109465129.

The spelling of 9821117252 in words is "nine billion, eight hundred twenty-one million, one hundred seventeen thousand, two hundred fifty-two".