21133333230000 has 100 divisors (see below), whose sum is σ = 68221217541048. Its totient is φ = 5635555520000.

The previous prime is 21133333229933. The next prime is 21133333230001. The reversal of 21133333230000 is 3233333112.

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 (24).

It is not an unprimeable number, because it can be changed into a prime (21133333230001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 352192221 + ... + 352252220.

Almost surely, 2^{21133333230000} is an apocalyptic number.

21133333230000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21133333230000 is an abundant number, since it is smaller than the sum of its proper divisors (47087884311048).

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

21133333230000 is an equidigital number, since it uses as much as digits as its factorization.

21133333230000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704444472 (or 704444451 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 24.

Adding to 21133333230000 its reverse (3233333112), we get a palindrome (21136566563112).

The spelling of 21133333230000 in words is "twenty-one trillion, one hundred thirty-three billion, three hundred thirty-three million, two hundred thirty thousand".