21320011344200 has 192 divisors, whose sum is σ = 50754575963520. Its totient is φ = 8327195136000.

The previous prime is 21320011344193. The next prime is 21320011344223. The reversal of 21320011344200 is 244311002312.

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, 423655040 + ... + 423705360.

It is an arithmetic number, because the mean of its divisors is an integer number (264346749810).

Almost surely, 2^{21320011344200} is an apocalyptic number.

21320011344200 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 21320011344200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25377287981760).

21320011344200 is an abundant number, since it is smaller than the sum of its proper divisors (29434564619320).

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

21320011344200 is a wasteful number, since it uses less digits than its factorization.

21320011344200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50728 (or 50719 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 21320011344200 its reverse (244311002312), we get a palindrome (21564322346512).

The spelling of 21320011344200 in words is "twenty-one trillion, three hundred twenty billion, eleven million, three hundred forty-four thousand, two hundred".