21300311330 has 64 divisors (see below), whose sum is σ = 41781264480. Its totient is φ = 7785713664.

The previous prime is 21300311309. The next prime is 21300311353. The reversal of 21300311330 is 3311300312.

It can be written as a sum of positive squares in 16 ways, for example, as 5850567121 + 15449744209 = 76489^2 + 124297^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a junction number, because it is equal to n+sod(n) for n = 21300311299 and 21300311308.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3198284 + ... + 3204936.

Almost surely, 2^21300311330 is an apocalyptic number.

21300311330 is a deficient number, since it is larger than the sum of its proper divisors (20480953150).

21300311330 is a wasteful number, since it uses less digits than its factorization.

21300311330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7223.

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 21300311330 its reverse (3311300312), we get a palindrome (24611611642).

The spelling of 21300311330 in words is "twenty-one billion, three hundred million, three hundred eleven thousand, three hundred thirty".