21304213310 has 8 divisors (see below), whose sum is σ = 38347583976. Its totient is φ = 8521685320.

The previous prime is 21304213309. The next prime is 21304213321. The reversal of 21304213310 is 1331240312.

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

It is a super-2 number, since 2×21304213310² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1065210656 + ... + 1065210675.

It is an arithmetic number, because the mean of its divisors is an integer number (4793447997).

Almost surely, 2^21304213310 is an apocalyptic number.

21304213310 is a deficient number, since it is larger than the sum of its proper divisors (17043370666).

21304213310 is a wasteful number, since it uses less digits than its factorization.

21304213310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2130421338.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21304213310 its reverse (1331240312), we get a palindrome (22635453622).

The spelling of 21304213310 in words is "twenty-one billion, three hundred four million, two hundred thirteen thousand, three hundred ten".