21043004330 has 8 divisors (see below), whose sum is σ = 37877407812. Its totient is φ = 8417201728.

The previous prime is 21043004329. The next prime is 21043004341. The reversal of 21043004330 is 3340034012.

It can be written as a sum of positive squares in 2 ways, for example, as 20934906721 + 108097609 = 144689^2 + 10397^2 .

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

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, 1052150207 + ... + 1052150226.

Almost surely, 2^21043004330 is an apocalyptic number.

21043004330 is a deficient number, since it is larger than the sum of its proper divisors (16834403482).

21043004330 is a wasteful number, since it uses less digits than its factorization.

21043004330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2104300440.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 21043004330 its reverse (3340034012), we get a palindrome (24383038342).

The spelling of 21043004330 in words is "twenty-one billion, forty-three million, four thousand, three hundred thirty".