9891330532220 has 24 divisors (see below), whose sum is σ = 21488062881600. Its totient is φ = 3820100067392.

The previous prime is 9891330532201. The next prime is 9891330532253. The reversal of 9891330532220 is 222350331989.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8527008500 + ... + 8527009659.

It is an arithmetic number, because the mean of its divisors is an integer number (895335953400).

Almost surely, 2^{9891330532220} is an apocalyptic number.

It is an amenable number.

9891330532220 is an abundant number, since it is smaller than the sum of its proper divisors (11596732349380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9891330532220 is a wasteful number, since it uses less digits than its factorization.

9891330532220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17054018197 (or 17054018195 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 47.

The spelling of 9891330532220 in words is "nine trillion, eight hundred ninety-one billion, three hundred thirty million, five hundred thirty-two thousand, two hundred twenty".