21333310000 has 50 divisors (see below), whose sum is σ = 51650101052. Its totient is φ = 8533320000.

The previous prime is 21333309997. The next prime is 21333310001. The reversal of 21333310000 is 1333312.

It is a tau number, because it is divible by the number of its divisors (50).

It is a super-2 number, since 2×21333310000² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (21333310001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1056666 + ... + 1076665.

Almost surely, 2^21333310000 is an apocalyptic number.

21333310000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21333310000 is an abundant number, since it is smaller than the sum of its proper divisors (30316791052).

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

21333310000 is an equidigital number, since it uses as much as digits as its factorization.

21333310000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2133359 (or 2133338 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 16.

Adding to 21333310000 its reverse (1333312), we get a palindrome (21334643312).

It can be divided in two parts, 2133 and 3310000, that added together give a palindrome (3312133).

The spelling of 21333310000 in words is "twenty-one billion, three hundred thirty-three million, three hundred ten thousand".