21342304330 has 32 divisors (see below), whose sum is σ = 39664977408. Its totient is φ = 8259537600.

The previous prime is 21342304267. The next prime is 21342304411. The reversal of 21342304330 is 3340324312.

It is a super-3 number, since 3×21342304330³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 21342304295 and 21342304304.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2343085 + ... + 2352175.

It is an arithmetic number, because the mean of its divisors is an integer number (1239530544).

Almost surely, 2^21342304330 is an apocalyptic number.

21342304330 is a deficient number, since it is larger than the sum of its proper divisors (18322673078).

21342304330 is a wasteful number, since it uses less digits than its factorization.

21342304330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16702.

The product of its (nonzero) digits is 5184, while the sum is 25.

Adding to 21342304330 its reverse (3340324312), we get a palindrome (24682628642).

The spelling of 21342304330 in words is "twenty-one billion, three hundred forty-two million, three hundred four thousand, three hundred thirty".