21220001000211 has 16 divisors (see below), whose sum is σ = 30469882012416. Its totient is φ = 13058403445536.

The previous prime is 21220001000147. The next prime is 21220001000227. The reversal of 21220001000211 is 11200010002212.

It is not a de Polignac number, because 21220001000211 - 2⁶ = 21220001000147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21220001000291) 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 15 ways as a sum of consecutive naturals, for example, 8551696 + ... + 10750418.

It is an arithmetic number, because the mean of its divisors is an integer number (1904367625776).

Almost surely, 2^{21220001000211} is an apocalyptic number.

21220001000211 is a deficient number, since it is larger than the sum of its proper divisors (9249881012205).

21220001000211 is a wasteful number, since it uses less digits than its factorization.

21220001000211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2446202.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21220001000211 its reverse (11200010002212), we get a palindrome (32420011002423).

The spelling of 21220001000211 in words is "twenty-one trillion, two hundred twenty billion, one million, two hundred eleven", and thus it is an aban number.