11000220000021 has 48 divisors (see below), whose sum is σ = 18997785451008. Its totient is φ = 6002047468800.

The previous prime is 11000220000013. The next prime is 11000220000097. The reversal of 11000220000021 is 12000002200011.

It is not a de Polignac number, because 11000220000021 - 2³ = 11000220000013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11000219999958 and 11000220000012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11000220000821) 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 47 ways as a sum of consecutive naturals, for example, 45183910 + ... + 45426711.

It is an arithmetic number, because the mean of its divisors is an integer number (395787196896).

Almost surely, 2^{11000220000021} is an apocalyptic number.

It is an amenable number.

11000220000021 is a deficient number, since it is larger than the sum of its proper divisors (7997565450987).

11000220000021 is a wasteful number, since it uses less digits than its factorization.

11000220000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90610722 (or 90610719 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 11000220000021 its reverse (12000002200011), we get a palindrome (23000222200032).

The spelling of 11000220000021 in words is "eleven trillion, two hundred twenty million, twenty-one", and thus it is an aban number.