21102302330 has 16 divisors (see below), whose sum is σ = 39209439744. Its totient is φ = 8168633040.

The previous prime is 21102302327. The next prime is 21102302339. The reversal of 21102302330 is 3320320112.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21102302299 and 21102302308.

It is not an unprimeable number, because it can be changed into a prime (21102302339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34035662 + ... + 34036281.

It is an arithmetic number, because the mean of its divisors is an integer number (2450589984).

Almost surely, 2^21102302330 is an apocalyptic number.

21102302330 is a deficient number, since it is larger than the sum of its proper divisors (18107137414).

21102302330 is a wasteful number, since it uses less digits than its factorization.

21102302330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68071981.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 21102302330 its reverse (3320320112), we get a palindrome (24422622442).

The spelling of 21102302330 in words is "twenty-one billion, one hundred two million, three hundred two thousand, three hundred thirty".