11022000021 has 32 divisors (see below), whose sum is σ = 16586549120. Its totient is φ = 7232239872.

The previous prime is 11021999987. The next prime is 11022000061. The reversal of 11022000021 is 12000022011.

It is not a de Polignac number, because 11022000021 - 2²⁷ = 10887782293 is a prime.

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

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11021999967 and 11022000012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11022000061) 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 31 ways as a sum of consecutive naturals, for example, 3386631 + ... + 3389883.

It is an arithmetic number, because the mean of its divisors is an integer number (518329660).

Almost surely, 2^11022000021 is an apocalyptic number.

It is an amenable number.

11022000021 is a deficient number, since it is larger than the sum of its proper divisors (5564549099).

11022000021 is a wasteful number, since it uses less digits than its factorization.

11022000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5202 (or 5196 counting only the distinct ones).

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

Adding to 11022000021 its reverse (12000022011), we get a palindrome (23022022032).

The spelling of 11022000021 in words is "eleven billion, twenty-two million, twenty-one", and thus it is an aban number and an uban number.