21113030330 has 48 divisors (see below), whose sum is σ = 44237853216. Its totient is φ = 7233881760.

The previous prime is 21113030329. The next prime is 21113030359. The reversal of 21113030330 is 3303031112.

It is a junction number, because it is equal to n+sod(n) for n = 21113030299 and 21113030308.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 756077 + ... + 783503.

It is an arithmetic number, because the mean of its divisors is an integer number (921621942).

Almost surely, 2^21113030330 is an apocalyptic number.

21113030330 is an abundant number, since it is smaller than the sum of its proper divisors (23124822886).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21113030330 is a wasteful number, since it uses less digits than its factorization.

21113030330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29019 (or 29012 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 21113030330 its reverse (3303031112), we get a palindrome (24416061442).

The spelling of 21113030330 in words is "twenty-one billion, one hundred thirteen million, thirty thousand, three hundred thirty".