21112330000 has 100 divisors (see below), whose sum is σ = 51817060108. Its totient is φ = 8328960000.

The previous prime is 21112329983. The next prime is 21112330003. The reversal of 21112330000 is 3321112.

It can be written as a sum of positive squares in 10 ways, for example, as 13167103504 + 7945226496 = 114748^2 + 89136^2 .

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

It is not an unprimeable number, because it can be changed into a prime (21112330003) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 715540 + ... + 744460.

Almost surely, 2^21112330000 is an apocalyptic number.

21112330000 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 21112330000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25908530054).

21112330000 is an abundant number, since it is smaller than the sum of its proper divisors (30704730108).

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

21112330000 is an equidigital number, since it uses as much as digits as its factorization.

21112330000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29022 (or 29001 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 21112330000 its reverse (3321112), we get a palindrome (21115651112).

The spelling of 21112330000 in words is "twenty-one billion, one hundred twelve million, three hundred thirty thousand".