21302213012330 has 8 divisors (see below), whose sum is σ = 38343983422212. Its totient is φ = 8520885204928.

The previous prime is 21302213012321. The next prime is 21302213012371. The reversal of 21302213012330 is 3321031220312.

It can be written as a sum of positive squares in 2 ways, for example, as 20504658634849 + 797554377481 = 4528207^2 + 893059^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 21302213012296 and 21302213012305.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1065110650607 + ... + 1065110650626.

Almost surely, 2^{21302213012330} is an apocalyptic number.

21302213012330 is a deficient number, since it is larger than the sum of its proper divisors (17041770409882).

21302213012330 is a wasteful number, since it uses less digits than its factorization.

21302213012330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2130221301240.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 21302213012330 its reverse (3321031220312), we get a palindrome (24623244232642).

The spelling of 21302213012330 in words is "twenty-one trillion, three hundred two billion, two hundred thirteen million, twelve thousand, three hundred thirty".