21110030308 has 12 divisors (see below), whose sum is σ = 37843591212. Its totient is φ = 10297575680.

The previous prime is 21110030287. The next prime is 21110030309. The reversal of 21110030308 is 80303001112.

It can be written as a sum of positive squares in 2 ways, for example, as 2011343104 + 19098687204 = 44848^2 + 138198^2 .

It is not an unprimeable number, because it can be changed into a prime (21110030309) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 64359685 + ... + 64360012.

It is an arithmetic number, because the mean of its divisors is an integer number (3153632601).

Almost surely, 2^21110030308 is an apocalyptic number.

It is an amenable number.

21110030308 is a deficient number, since it is larger than the sum of its proper divisors (16733560904).

21110030308 is a wasteful number, since it uses less digits than its factorization.

21110030308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128719742 (or 128719740 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The spelling of 21110030308 in words is "twenty-one billion, one hundred ten million, thirty thousand, three hundred eight".