21320050030000 has 100 divisors (see below), whose sum is σ = 54654324923880. Its totient is φ = 8026371712000.

The previous prime is 21320050029979. The next prime is 21320050030009. The reversal of 21320050030000 is 3005002312.

It is a tau number, because it is divible by the number of its divisors (100).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (21320050030009) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 62536030 + ... + 62876029.

Almost surely, 2^{21320050030000} is an apocalyptic number.

21320050030000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21320050030000 is an abundant number, since it is smaller than the sum of its proper divisors (33334274893880).

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

21320050030000 is a wasteful number, since it uses less digits than its factorization.

21320050030000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125412104 (or 125412083 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 16.

Adding to 21320050030000 its reverse (3005002312), we get a palindrome (21323055032312).

The spelling of 21320050030000 in words is "twenty-one trillion, three hundred twenty billion, fifty million, thirty thousand".