11022020200021 has 4 divisors (see below), whose sum is σ = 11670374329452. Its totient is φ = 10373666070592.

The previous prime is 11022020200013. The next prime is 11022020200097. The reversal of 11022020200021 is 12000202022011.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2990775936996 + 8031244263025 = 1729386^2 + 2833945^2 .

It is a cyclic number.

It is not a de Polignac number, because 11022020200021 - 2³ = 11022020200013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11022020199974 and 11022020200010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11022020200421) 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, 324177064690 + ... + 324177064723.

It is an arithmetic number, because the mean of its divisors is an integer number (2917593582363).

Almost surely, 2^{11022020200021} is an apocalyptic number.

It is an amenable number.

11022020200021 is a deficient number, since it is larger than the sum of its proper divisors (648354129431).

11022020200021 is an equidigital number, since it uses as much as digits as its factorization.

11022020200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648354129430.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 11022020200021 its reverse (12000202022011), we get a palindrome (23022222222032).

The spelling of 11022020200021 in words is "eleven trillion, twenty-two billion, twenty million, two hundred thousand, twenty-one".