21012320130200 has 144 divisors (see below), whose sum is σ = 59820789472200. Its totient is φ = 6825054297600.

The previous prime is 21012320130127. The next prime is 21012320130209. The reversal of 21012320130200 is 203102321012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21012320130209) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 56237861 + ... + 56610260.

Almost surely, 2^{21012320130200} is an apocalyptic number.

21012320130200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21012320130200 is an abundant number, since it is smaller than the sum of its proper divisors (38808469342000).

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

21012320130200 is a wasteful number, since it uses less digits than its factorization.

21012320130200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112848170 (or 112848154 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21012320130200 its reverse (203102321012), we get a palindrome (21215422451212).

The spelling of 21012320130200 in words is "twenty-one trillion, twelve billion, three hundred twenty million, one hundred thirty thousand, two hundred".