21033313300 has 18 divisors (see below), whose sum is σ = 45642290078. Its totient is φ = 8413325280.

The previous prime is 21033313229. The next prime is 21033313313. The reversal of 21033313300 is 331333012.

It can be written as a sum of positive squares in 3 ways, for example, as 827827984 + 20205485316 = 28772^2 + 142146^2 .

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 105166467 + ... + 105166666.

Almost surely, 2^21033313300 is an apocalyptic number.

21033313300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21033313300 is an abundant number, since it is smaller than the sum of its proper divisors (24608976778).

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

21033313300 is a wasteful number, since it uses less digits than its factorization.

21033313300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210333147 (or 210333140 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 19.

Adding to 21033313300 its reverse (331333012), we get a palindrome (21364646312).

The spelling of 21033313300 in words is "twenty-one billion, thirty-three million, three hundred thirteen thousand, three hundred".