21104005035 has 8 divisors (see below), whose sum is σ = 33766408080. Its totient is φ = 11255469344.

The previous prime is 21104005031. The next prime is 21104005081. The reversal of 21104005035 is 53050040112.

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

It is a cyclic number.

It is not a de Polignac number, because 21104005035 - 2² = 21104005031 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21104005031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 703466820 + ... + 703466849.

It is an arithmetic number, because the mean of its divisors is an integer number (4220801010).

Almost surely, 2^21104005035 is an apocalyptic number.

21104005035 is a deficient number, since it is larger than the sum of its proper divisors (12662403045).

21104005035 is a wasteful number, since it uses less digits than its factorization.

21104005035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1406933677.

The product of its (nonzero) digits is 600, while the sum is 21.

Adding to 21104005035 its reverse (53050040112), we get a palindrome (74154045147).

The spelling of 21104005035 in words is "twenty-one billion, one hundred four million, five thousand, thirty-five".