21232004104 has 16 divisors (see below), whose sum is σ = 39873107520. Its totient is φ = 10599175440.

The previous prime is 21232004071. The next prime is 21232004147. The reversal of 21232004104 is 40140023212.

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, 2097964 + ... + 2108059.

It is an arithmetic number, because the mean of its divisors is an integer number (2492069220).

Almost surely, 2^21232004104 is an apocalyptic number.

It is an amenable number.

21232004104 is a deficient number, since it is larger than the sum of its proper divisors (18641103416).

21232004104 is a wasteful number, since it uses less digits than its factorization.

21232004104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4206660 (or 4206656 counting only the distinct ones).

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

Adding to 21232004104 its reverse (40140023212), we get a palindrome (61372027316).

The spelling of 21232004104 in words is "twenty-one billion, two hundred thirty-two million, four thousand, one hundred four".