21102034304 has 64 divisors (see below), whose sum is σ = 46733527680. Its totient is φ = 9425203200.

The previous prime is 21102034297. The next prime is 21102034309. The reversal of 21102034304 is 40343020112.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21102034309) 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, 152957 + ... + 256124.

It is an arithmetic number, because the mean of its divisors is an integer number (730211370).

Almost surely, 2^21102034304 is an apocalyptic number.

It is an amenable number.

21102034304 is an abundant number, since it is smaller than the sum of its proper divisors (25631493376).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21102034304 is a wasteful number, since it uses less digits than its factorization.

21102034304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409139 (or 409127 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 21102034304 its reverse (40343020112), we get a palindrome (61445054416).

The spelling of 21102034304 in words is "twenty-one billion, one hundred two million, thirty-four thousand, three hundred four".