21333210000 has 200 divisors, whose sum is σ = 69585900384. Its totient is φ = 5629440000.

The previous prime is 21333209981. The next prime is 21333210011. The reversal of 21333210000 is 1233312.

It is a tau number, because it is divible by the number of its divisors (200).

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 2906335 + ... + 2913665.

Almost surely, 2^21333210000 is an apocalyptic number.

21333210000 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 21333210000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34792950192).

21333210000 is an abundant number, since it is smaller than the sum of its proper divisors (48252690384).

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

21333210000 is an equidigital number, since it uses as much as digits as its factorization.

21333210000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7459 (or 7438 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 21333210000 its reverse (1233312), we get a palindrome (21334443312).

The spelling of 21333210000 in words is "twenty-one billion, three hundred thirty-three million, two hundred ten thousand".