21102410304 has 280 divisors, whose sum is σ = 64569429408. Its totient is φ = 6810531840.

The previous prime is 21102410299. The next prime is 21102410317. The reversal of 21102410304 is 40301420112.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 30538599 + ... + 30539289.

Almost surely, 2^21102410304 is an apocalyptic number.

21102410304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21102410304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32284714704).

21102410304 is an abundant number, since it is smaller than the sum of its proper divisors (43467019104).

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

21102410304 is a wasteful number, since it uses less digits than its factorization.

21102410304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 895 (or 876 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 21102410304 its reverse (40301420112), we get a palindrome (61403830416).

The spelling of 21102410304 in words is "twenty-one billion, one hundred two million, four hundred ten thousand, three hundred four".