9920911011 has 64 divisors (see below), whose sum is σ = 15598780416. Its totient is φ = 5548188800.

The previous prime is 9920910959. The next prime is 9920911031. The reversal of 9920911011 is 1101190299.

9920911011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9920911011 - 2¹⁸ = 9920648867 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (9920911031) 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 63 ways as a sum of consecutive naturals, for example, 2530825 + ... + 2534741.

It is an arithmetic number, because the mean of its divisors is an integer number (243730944).

Almost surely, 2^9920911011 is an apocalyptic number.

9920911011 is a deficient number, since it is larger than the sum of its proper divisors (5677869405).

9920911011 is a wasteful number, since it uses less digits than its factorization.

9920911011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4072.

The product of its (nonzero) digits is 1458, while the sum is 33.

The square root of 9920911011 is about 99603.7700641898. The cubic root of 9920911011 is about 2148.7399150243.

The spelling of 9920911011 in words is "nine billion, nine hundred twenty million, nine hundred eleven thousand, eleven".