21020012300200 has 24 divisors (see below), whose sum is σ = 48871528598430. Its totient is φ = 8408004920000.

The previous prime is 21020012300167. The next prime is 21020012300249. The reversal of 21020012300200 is 200321002012.

It can be written as a sum of positive squares in 3 ways, for example, as 14686324011076 + 6333688289124 = 3832274^2 + 2516682^2 .

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 52550030551 + ... + 52550030950.

Almost surely, 2^{21020012300200} is an apocalyptic number.

21020012300200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21020012300200 is an abundant number, since it is smaller than the sum of its proper divisors (27851516298230).

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

21020012300200 is a wasteful number, since it uses less digits than its factorization.

21020012300200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105100061517 (or 105100061508 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 21020012300200 its reverse (200321002012), we get a palindrome (21220333302212).

The spelling of 21020012300200 in words is "twenty-one trillion, twenty billion, twelve million, three hundred thousand, two hundred".