21303010000 has 100 divisors (see below), whose sum is σ = 51653490592. Its totient is φ = 8508528000.

The previous prime is 21303009967. The next prime is 21303010013. The reversal of 21303010000 is 1030312.

It is a tau number, because it is divible by the number of its divisors (100).

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 9668899 + ... + 9671101.

Almost surely, 2^21303010000 is an apocalyptic number.

21303010000 is a gapful number since it is divisible by the number (20) 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 21303010000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25826745296).

21303010000 is an abundant number, since it is smaller than the sum of its proper divisors (30350480592).

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

21303010000 is an equidigital number, since it uses as much as digits as its factorization.

21303010000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3198 (or 3177 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 10.

Adding to 21303010000 its reverse (1030312), we get a palindrome (21304040312).

The spelling of 21303010000 in words is "twenty-one billion, three hundred three million, ten thousand".