21421000130200 has 192 divisors, whose sum is σ = 56639379133440. Its totient is φ = 7463544000000.

The previous prime is 21421000130197. The next prime is 21421000130263. The reversal of 21421000130200 is 203100012412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5333295 + ... + 8443105.

It is an arithmetic number, because the mean of its divisors is an integer number (294996766320).

Almost surely, 2^{21421000130200} is an apocalyptic number.

21421000130200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21421000130200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28319689566720).

21421000130200 is an abundant number, since it is smaller than the sum of its proper divisors (35218379003240).

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

21421000130200 is a wasteful number, since it uses less digits than its factorization.

21421000130200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3109970 (or 3109961 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 21421000130200 its reverse (203100012412), we get a palindrome (21624100142612).

The spelling of 21421000130200 in words is "twenty-one trillion, four hundred twenty-one billion, one hundred thirty thousand, two hundred".