21104110204 has 24 divisors (see below), whose sum is σ = 37392460560. Its totient is φ = 10420654464.

The previous prime is 21104110201. The next prime is 21104110229. The reversal of 21104110204 is 40201140112.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21104110201) 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, 894382 + ... + 917674.

It is an arithmetic number, because the mean of its divisors is an integer number (1558019190).

Almost surely, 2^21104110204 is an apocalyptic number.

It is an amenable number.

21104110204 is a deficient number, since it is larger than the sum of its proper divisors (16288350356).

21104110204 is a wasteful number, since it uses less digits than its factorization.

21104110204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26109 (or 26107 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21104110204 its reverse (40201140112), we get a palindrome (61305250316).

The spelling of 21104110204 in words is "twenty-one billion, one hundred four million, one hundred ten thousand, two hundred four".