21100000211 has 8 divisors (see below), whose sum is σ = 22447062864. Its totient is φ = 19764702720.

The previous prime is 21100000157. The next prime is 21100000219. The reversal of 21100000211 is 11200000112.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21100000211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21100000219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2937590 + ... + 2944763.

It is an arithmetic number, because the mean of its divisors is an integer number (2805882858).

Almost surely, 2^21100000211 is an apocalyptic number.

21100000211 is a deficient number, since it is larger than the sum of its proper divisors (1347062653).

21100000211 is a wasteful number, since it uses less digits than its factorization.

21100000211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5882581.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 21100000211 its reverse (11200000112), we get a palindrome (32300000323).

Subtracting from 21100000211 its reverse (11200000112), we obtain a palindrome (9900000099).

The spelling of 21100000211 in words is "twenty-one billion, one hundred million, two hundred eleven", and thus it is an aban number.