21103234043211 has 24 divisors (see below), whose sum is σ = 30778311061680. Its totient is φ = 13932775872000.

The previous prime is 21103234043189. The next prime is 21103234043263. The reversal of 21103234043211 is 11234043230112.

21103234043211 is a `hidden beast` number, since 2 + 1 + 10 + 32 + 3 + 404 + 3 + 211 = 666.

It is not a de Polignac number, because 21103234043211 - 2⁵ = 21103234043179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21103234063211) 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 23 ways as a sum of consecutive naturals, for example, 20532130 + ... + 21535431.

It is an arithmetic number, because the mean of its divisors is an integer number (1282429627570).

Almost surely, 2^{21103234043211} is an apocalyptic number.

21103234043211 is a deficient number, since it is larger than the sum of its proper divisors (9675077018469).

21103234043211 is a wasteful number, since it uses less digits than its factorization.

21103234043211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42068107 (or 42068104 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 21103234043211 its reverse (11234043230112), we get a palindrome (32337277273323).

The spelling of 21103234043211 in words is "twenty-one trillion, one hundred three billion, two hundred thirty-four million, forty-three thousand, two hundred eleven".