11021020009999 has 4 divisors (see below), whose sum is σ = 11100307923880. Its totient is φ = 10941732096120.

The previous prime is 11021020009997. The next prime is 11021020010023. The reversal of 11021020009999 is 99990002012011.

11021020009999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11021020009999 - 2¹ = 11021020009997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11021020009997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39643956732 + ... + 39643957009.

It is an arithmetic number, because the mean of its divisors is an integer number (2775076980970).

Almost surely, 2^{11021020009999} is an apocalyptic number.

11021020009999 is a deficient number, since it is larger than the sum of its proper divisors (79287913881).

11021020009999 is an equidigital number, since it uses as much as digits as its factorization.

11021020009999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79287913880.

The product of its (nonzero) digits is 26244, while the sum is 43.

The spelling of 11021020009999 in words is "eleven trillion, twenty-one billion, twenty million, nine thousand, nine hundred ninety-nine".