9981105011 has 4 divisors (see below), whose sum is σ = 9982016352. Its totient is φ = 9980193672.

The previous prime is 9981104963. The next prime is 9981105031. The reversal of 9981105011 is 1105011899.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9981105011 - 2¹⁸ = 9980842867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9981105031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 439040 + ... + 461213.

It is an arithmetic number, because the mean of its divisors is an integer number (2495504088).

Almost surely, 2^9981105011 is an apocalyptic number.

9981105011 is a deficient number, since it is larger than the sum of its proper divisors (911341).

9981105011 is a wasteful number, since it uses less digits than its factorization.

9981105011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911340.

The product of its (nonzero) digits is 3240, while the sum is 35.

The square root of 9981105011 is about 99905.4803852121. The cubic root of 9981105011 is about 2153.0769004995.

The spelling of 9981105011 in words is "nine billion, nine hundred eighty-one million, one hundred five thousand, eleven".