21304030030 has 8 divisors (see below), whose sum is σ = 38347254072. Its totient is φ = 8521612008.

The previous prime is 21304030021. The next prime is 21304030061. The reversal of 21304030030 is 3003040312.

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

It is a junction number, because it is equal to n+sod(n) for n = 21304029986 and 21304030013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1065201492 + ... + 1065201511.

It is an arithmetic number, because the mean of its divisors is an integer number (4793406759).

Almost surely, 2^21304030030 is an apocalyptic number.

21304030030 is a deficient number, since it is larger than the sum of its proper divisors (17043224042).

21304030030 is a wasteful number, since it uses less digits than its factorization.

21304030030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2130403010.

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 21304030030 its reverse (3003040312), we get a palindrome (24307070342).

The spelling of 21304030030 in words is "twenty-one billion, three hundred four million, thirty thousand, thirty".