11000022020021 has 16 divisors (see below), whose sum is σ = 11387136764400. Its totient is φ = 10617735467520.

The previous prime is 11000022019993. The next prime is 11000022020051. The reversal of 11000022020021 is 12002022000011.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1912027983121 + 9087994036900 = 1382761^2 + 3014630^2 .

It is a cyclic number.

It is not a de Polignac number, because 11000022020021 - 2⁴² = 6601975508917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11000022019984 and 11000022020011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11000022020051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7151411 + ... + 8552351.

It is an arithmetic number, because the mean of its divisors is an integer number (711696047775).

Almost surely, 2^{11000022020021} is an apocalyptic number.

It is an amenable number.

11000022020021 is a deficient number, since it is larger than the sum of its proper divisors (387114744379).

11000022020021 is a wasteful number, since it uses less digits than its factorization.

11000022020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1402664.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 11000022020021 its reverse (12002022000011), we get a palindrome (23002044020032).

The spelling of 11000022020021 in words is "eleven trillion, twenty-two million, twenty thousand, twenty-one".