21200200212211 has 4 divisors (see below), whose sum is σ = 22316000223400. Its totient is φ = 20084400201024.

The previous prime is 21200200212197. The next prime is 21200200212239. The reversal of 21200200212211 is 11221200200212.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 21200200212211 - 2⁹ = 21200200211699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21200200212251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 557900005566 + ... + 557900005603.

It is an arithmetic number, because the mean of its divisors is an integer number (5579000055850).

Almost surely, 2^{21200200212211} is an apocalyptic number.

21200200212211 is a deficient number, since it is larger than the sum of its proper divisors (1115800011189).

21200200212211 is a wasteful number, since it uses less digits than its factorization.

21200200212211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115800011188.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21200200212211 its reverse (11221200200212), we get a palindrome (32421400412423).

The spelling of 21200200212211 in words is "twenty-one trillion, two hundred billion, two hundred million, two hundred twelve thousand, two hundred eleven".