21234335104 has 32 divisors (see below), whose sum is σ = 42467445000. Its totient is φ = 10575839232.

The previous prime is 21234335099. The next prime is 21234335117. The reversal of 21234335104 is 40153343212.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 289854 + ... + 355645.

Almost surely, 2^21234335104 is an apocalyptic number.

It is an amenable number.

21234335104 is a deficient number, since it is larger than the sum of its proper divisors (21233109896).

21234335104 is an equidigital number, since it uses as much as digits as its factorization.

21234335104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645770 (or 645758 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 21234335104 its reverse (40153343212), we get a palindrome (61387678316).

The spelling of 21234335104 in words is "twenty-one billion, two hundred thirty-four million, three hundred thirty-five thousand, one hundred four".