21104511035 has 4 divisors (see below), whose sum is σ = 25325413248. Its totient is φ = 16883608824.

The previous prime is 21104511019. The next prime is 21104511053. The reversal of 21104511035 is 53011540112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21104511035 - 2⁴ = 21104511019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21104511035.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2110451099 + ... + 2110451108.

It is an arithmetic number, because the mean of its divisors is an integer number (6331353312).

Almost surely, 2^21104511035 is an apocalyptic number.

21104511035 is a deficient number, since it is larger than the sum of its proper divisors (4220902213).

21104511035 is an equidigital number, since it uses as much as digits as its factorization.

21104511035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4220902212.

The product of its (nonzero) digits is 600, while the sum is 23.

The spelling of 21104511035 in words is "twenty-one billion, one hundred four million, five hundred eleven thousand, thirty-five".