21101113304 has 8 divisors (see below), whose sum is σ = 39564587460. Its totient is φ = 10550556648.

The previous prime is 21101113301. The next prime is 21101113339. The reversal of 21101113304 is 40331110112.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21101113301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1318819574 + ... + 1318819589.

Almost surely, 2^21101113304 is an apocalyptic number.

It is an amenable number.

21101113304 is a deficient number, since it is larger than the sum of its proper divisors (18463474156).

21101113304 is a wasteful number, since it uses less digits than its factorization.

21101113304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2637639169 (or 2637639165 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 21101113304 its reverse (40331110112), we get a palindrome (61432223416).

The spelling of 21101113304 in words is "twenty-one billion, one hundred one million, one hundred thirteen thousand, three hundred four".