21330212221011 has 8 divisors (see below), whose sum is σ = 28864764796864. Its totient is φ = 14007900562920.

The previous prime is 21330212220923. The next prime is 21330212221049. The reversal of 21330212221011 is 11012221203312.

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

It is not a de Polignac number, because 21330212221011 - 2¹⁹ = 21330211696723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21330212021011) 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, 53060229205 + ... + 53060229606.

It is an arithmetic number, because the mean of its divisors is an integer number (3608095599608).

Almost surely, 2^{21330212221011} is an apocalyptic number.

21330212221011 is a deficient number, since it is larger than the sum of its proper divisors (7534552575853).

21330212221011 is a wasteful number, since it uses less digits than its factorization.

21330212221011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106120458881.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 21330212221011 its reverse (11012221203312), we get a palindrome (32342433424323).

The spelling of 21330212221011 in words is "twenty-one trillion, three hundred thirty billion, two hundred twelve million, two hundred twenty-one thousand, eleven".