21002200021211 has 8 divisors (see below), whose sum is σ = 21915428261280. Its totient is φ = 20088979206912.

The previous prime is 21002200021189. The next prime is 21002200021217. The reversal of 21002200021211 is 11212000220012.

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

It is a cyclic number.

It is not a de Polignac number, because 21002200021211 - 2¹⁴ = 21002200004827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21002200021217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4367051 + ... + 7815083.

It is an arithmetic number, because the mean of its divisors is an integer number (2739428532660).

Almost surely, 2^{21002200021211} is an apocalyptic number.

21002200021211 is a deficient number, since it is larger than the sum of its proper divisors (913228240069).

21002200021211 is a wasteful number, since it uses less digits than its factorization.

21002200021211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3712885.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21002200021211 its reverse (11212000220012), we get a palindrome (32214200241223).

The spelling of 21002200021211 in words is "twenty-one trillion, two billion, two hundred million, twenty-one thousand, two hundred eleven".