11022020021 has 8 divisors (see below), whose sum is σ = 11583167904. Its totient is φ = 10474727760.

The previous prime is 11022019991. The next prime is 11022020047. The reversal of 11022020021 is 12002022011.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11022020021 - 2²⁶ = 10954911157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11022019984 and 11022020011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11022023021) 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 7 ways as a sum of consecutive naturals, for example, 3462275 + ... + 3465456.

It is an arithmetic number, because the mean of its divisors is an integer number (1447895988).

Almost surely, 2^11022020021 is an apocalyptic number.

It is an amenable number.

11022020021 is a deficient number, since it is larger than the sum of its proper divisors (561147883).

11022020021 is an equidigital number, since it uses as much as digits as its factorization.

11022020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6927811.

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

Adding to 11022020021 its reverse (12002022011), we get a palindrome (23024042032).

The spelling of 11022020021 in words is "eleven billion, twenty-two million, twenty thousand, twenty-one".