11002200021 has 12 divisors (see below), whose sum is σ = 16728491520. Its totient is φ = 6948757800.

The previous prime is 11002199959. The next prime is 11002200023. The reversal of 11002200021 is 12000220011.

It is a de Polignac number, because none of the positive numbers 2^k-11002200021 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 = 11002199976 and 11002200012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11002200023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32170005 + ... + 32170346.

It is an arithmetic number, because the mean of its divisors is an integer number (1394040960).

Almost surely, 2^11002200021 is an apocalyptic number.

It is an amenable number.

11002200021 is a deficient number, since it is larger than the sum of its proper divisors (5726291499).

11002200021 is a wasteful number, since it uses less digits than its factorization.

11002200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64340376 (or 64340373 counting only the distinct ones).

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

Adding to 11002200021 its reverse (12000220011), we get a palindrome (23002420032).

The spelling of 11002200021 in words is "eleven billion, two million, two hundred thousand, twenty-one".