21303001120 has 96 divisors (see below), whose sum is σ = 52678200960. Its totient is φ = 8125624320.

The previous prime is 21303001117. The next prime is 21303001151. The reversal of 21303001120 is 2110030312.

It is a self number, because there is not a number n which added to its sum of digits gives 21303001120.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1209336 + ... + 1226824.

It is an arithmetic number, because the mean of its divisors is an integer number (548731260).

Almost surely, 2^21303001120 is an apocalyptic number.

21303001120 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 21303001120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26339100480).

21303001120 is an abundant number, since it is smaller than the sum of its proper divisors (31375199840).

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

21303001120 is a wasteful number, since it uses less digits than its factorization.

21303001120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17858 (or 17850 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 21303001120 its reverse (2110030312), we get a palindrome (23413031432).

The spelling of 21303001120 in words is "twenty-one billion, three hundred three million, one thousand, one hundred twenty".