21043233300 has 36 divisors (see below), whose sum is σ = 60885089216. Its totient is φ = 5611528800.

The previous prime is 21043233269. The next prime is 21043233331. The reversal of 21043233300 is 333234012.

It is an interprime number because it is at equal distance from previous prime (21043233269) and next prime (21043233331).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35071756 + ... + 35072355.

Almost surely, 2^21043233300 is an apocalyptic number.

21043233300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21043233300 is an abundant number, since it is smaller than the sum of its proper divisors (39841855916).

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

21043233300 is a wasteful number, since it uses less digits than its factorization.

21043233300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70144128 (or 70144121 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 21043233300 its reverse (333234012), we get a palindrome (21376467312).

The spelling of 21043233300 in words is "twenty-one billion, forty-three million, two hundred thirty-three thousand, three hundred".