21113330113200 has 480 divisors, whose sum is σ = 74912250434112. Its totient is φ = 5049354240000.

The previous prime is 21113330113151. The next prime is 21113330113223. The reversal of 21113330113200 is 231103331112.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 404591110 + ... + 404643290.

Almost surely, 2^{21113330113200} is an apocalyptic number.

21113330113200 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 21113330113200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37456125217056).

21113330113200 is an abundant number, since it is smaller than the sum of its proper divisors (53798920320912).

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

21113330113200 is a wasteful number, since it uses less digits than its factorization.

21113330113200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52953 (or 52942 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 21113330113200 its reverse (231103331112), we get a palindrome (21344433444312).

The spelling of 21113330113200 in words is "twenty-one trillion, one hundred thirteen billion, three hundred thirty million, one hundred thirteen thousand, two hundred".