21113337930 has 32 divisors (see below), whose sum is σ = 51007598208. Its totient is φ = 5592936000.

The previous prime is 21113337923. The next prime is 21113337941. The reversal of 21113337930 is 3973331112.

It is a junction number, because it is equal to n+sod(n) for n = 21113337891 and 21113337900.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2325861 + ... + 2334920.

It is an arithmetic number, because the mean of its divisors is an integer number (1593987444).

Almost surely, 2^21113337930 is an apocalyptic number.

21113337930 is an abundant number, since it is smaller than the sum of its proper divisors (29894260278).

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

21113337930 is a wasteful number, since it uses less digits than its factorization.

21113337930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4660942.

The product of its (nonzero) digits is 10206, while the sum is 33.

The spelling of 21113337930 in words is "twenty-one billion, one hundred thirteen million, three hundred thirty-seven thousand, nine hundred thirty".