21004104232 has 16 divisors (see below), whose sum is σ = 39385310400. Its totient is φ = 10501354800.

The previous prime is 21004104221. The next prime is 21004104259. The reversal of 21004104232 is 23240140012.

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, 54369 + ... + 212047.

It is an arithmetic number, because the mean of its divisors is an integer number (2461581900).

Almost surely, 2^21004104232 is an apocalyptic number.

It is an amenable number.

21004104232 is a deficient number, since it is larger than the sum of its proper divisors (18381206168).

21004104232 is a wasteful number, since it uses less digits than its factorization.

21004104232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174336 (or 174332 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 21004104232 its reverse (23240140012), we get a palindrome (44244244244).

The spelling of 21004104232 in words is "twenty-one billion, four million, one hundred four thousand, two hundred thirty-two".