21302300330 has 16 divisors (see below), whose sum is σ = 40599678600. Its totient is φ = 8019689472.

The previous prime is 21302300311. The next prime is 21302300353. The reversal of 21302300330 is 3300320312.

It can be written as a sum of positive squares in 4 ways, for example, as 20148950809 + 1153349521 = 141947^2 + 33961^2 .

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 = 21302300299 and 21302300308.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62653655 + ... + 62653994.

Almost surely, 2^21302300330 is an apocalyptic number.

21302300330 is a deficient number, since it is larger than the sum of its proper divisors (19297378270).

21302300330 is a wasteful number, since it uses less digits than its factorization.

21302300330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125307673.

The product of its (nonzero) digits is 324, while the sum is 17.

Adding to 21302300330 its reverse (3300320312), we get a palindrome (24602620642).

The spelling of 21302300330 in words is "twenty-one billion, three hundred two million, three hundred thousand, three hundred thirty".