21303200112 has 80 divisors (see below), whose sum is σ = 55971417600. Its totient is φ = 6980601600.

The previous prime is 21303200099. The next prime is 21303200117. The reversal of 21303200112 is 21100230312.

It is a junction number, because it is equal to n+sod(n) for n = 21303200091 and 21303200100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21303200117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1180437 + ... + 1198347.

It is an arithmetic number, because the mean of its divisors is an integer number (699642720).

Almost surely, 2^21303200112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21303200112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27985708800).

21303200112 is an abundant number, since it is smaller than the sum of its proper divisors (34668217488).

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

21303200112 is a wasteful number, since it uses less digits than its factorization.

21303200112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18342 (or 18336 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21303200112 its reverse (21100230312), we get a palindrome (42403430424).

The spelling of 21303200112 in words is "twenty-one billion, three hundred three million, two hundred thousand, one hundred twelve".