21302303033312 has 96 divisors (see below), whose sum is σ = 48281566656960. Its totient is φ = 9062809251840.

The previous prime is 21302303033299. The next prime is 21302303033317. The reversal of 21302303033312 is 21333030320312.

It is a happy number.

It is a super-2 number, since 2×21302303033312² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21302303033317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22111364 + ... + 23054652.

It is an arithmetic number, because the mean of its divisors is an integer number (502932986010).

Almost surely, 2^{21302303033312} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21302303033312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24140783328480).

21302303033312 is an abundant number, since it is smaller than the sum of its proper divisors (26979263623648).

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

21302303033312 is a wasteful number, since it uses less digits than its factorization.

21302303033312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 944044 (or 944036 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 26.

Adding to 21302303033312 its reverse (21333030320312), we get a palindrome (42635333353624).

The spelling of 21302303033312 in words is "twenty-one trillion, three hundred two billion, three hundred three million, thirty-three thousand, three hundred twelve".