21201302000 has 160 divisors (see below), whose sum is σ = 54387590400. Its totient is φ = 7970976000.

The previous prime is 21201301999. The next prime is 21201302027. The reversal of 21201302000 is 20310212.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4975871 + ... + 4980129.

It is an arithmetic number, because the mean of its divisors is an integer number (339922440).

Almost surely, 2^21201302000 is an apocalyptic number.

21201302000 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 21201302000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27193795200).

21201302000 is an abundant number, since it is smaller than the sum of its proper divisors (33186288400).

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

21201302000 is a wasteful number, since it uses less digits than its factorization.

21201302000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4432 (or 4416 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 21201302000 its reverse (20310212), we get a palindrome (21221612212).

The spelling of 21201302000 in words is "twenty-one billion, two hundred one million, three hundred two thousand".