21340333200000 has 384 divisors, whose sum is σ = 71749220256000. Its totient is φ = 5618695680000.

The previous prime is 21340333199993. The next prime is 21340333200037. The reversal of 21340333200000 is 233304312.

It is a tau number, because it is divible by the number of its divisors (384).

It is a self number, because there is not a number n which added to its sum of digits gives 21340333200000.

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, 94687446 + ... + 94912554.

It is an arithmetic number, because the mean of its divisors is an integer number (186846927750).

Almost surely, 2^{21340333200000} is an apocalyptic number.

21340333200000 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 21340333200000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35874610128000).

21340333200000 is an abundant number, since it is smaller than the sum of its proper divisors (50408887056000).

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

21340333200000 is an frugal number, since it uses more digits than its factorization.

21340333200000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225230 (or 225198 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 21340333200000 its reverse (233304312), we get a palindrome (21340566504312).

The spelling of 21340333200000 in words is "twenty-one trillion, three hundred forty billion, three hundred thirty-three million, two hundred thousand".