21103104411 has 12 divisors (see below), whose sum is σ = 32275336392. Its totient is φ = 13241163456.

The previous prime is 21103104403. The next prime is 21103104439. The reversal of 21103104411 is 11440130112.

21103104411 is a `hidden beast` number, since 211 + 0 + 3 + 10 + 441 + 1 = 666.

It is not a de Polignac number, because 21103104411 - 2³ = 21103104403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21103104311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68964241 + ... + 68964546.

It is an arithmetic number, because the mean of its divisors is an integer number (2689611366).

Almost surely, 2^21103104411 is an apocalyptic number.

21103104411 is a deficient number, since it is larger than the sum of its proper divisors (11172231981).

21103104411 is a wasteful number, since it uses less digits than its factorization.

21103104411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137928810 (or 137928807 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 21103104411 its reverse (11440130112), we get a palindrome (32543234523).

The spelling of 21103104411 in words is "twenty-one billion, one hundred three million, one hundred four thousand, four hundred eleven".