21113230330 has 32 divisors (see below), whose sum is σ = 38750586768. Its totient is φ = 8280230400.

The previous prime is 21113230321. The next prime is 21113230373. The reversal of 21113230330 is 3303231112.

It can be written as a sum of positive squares in 8 ways, for example, as 2201204889 + 18912025441 = 46917^2 + 137521^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21113230298 and 21113230307.

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, 135640 + ... + 246220.

Almost surely, 2^21113230330 is an apocalyptic number.

21113230330 is a deficient number, since it is larger than the sum of its proper divisors (17637356438).

21113230330 is a wasteful number, since it uses less digits than its factorization.

21113230330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110962.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 21113230330 its reverse (3303231112), we get a palindrome (24416461442).

The spelling of 21113230330 in words is "twenty-one billion, one hundred thirteen million, two hundred thirty thousand, three hundred thirty".