21200221020011 has 8 divisors (see below), whose sum is σ = 23127747780864. Its totient is φ = 19272733249320.

The previous prime is 21200221019987. The next prime is 21200221020047. The reversal of 21200221020011 is 11002012200212.

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 21200221020011 - 2¹⁴ = 21200221003627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21200221020071) 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 7 ways as a sum of consecutive naturals, for example, 8604815 + ... + 10790888.

It is an arithmetic number, because the mean of its divisors is an integer number (2890968472608).

Almost surely, 2^{21200221020011} is an apocalyptic number.

21200221020011 is a deficient number, since it is larger than the sum of its proper divisors (1927526760853).

21200221020011 is a wasteful number, since it uses less digits than its factorization.

21200221020011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19495081.

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

Adding to 21200221020011 its reverse (11002012200212), we get a palindrome (32202233220223).

The spelling of 21200221020011 in words is "twenty-one trillion, two hundred billion, two hundred twenty-one million, twenty thousand, eleven".