21230323299 has 48 divisors (see below), whose sum is σ = 33006579840. Its totient is φ = 13101454080.

The previous prime is 21230323253. The next prime is 21230323319. The reversal of 21230323299 is 99232303212.

21230323299 is a `hidden beast` number, since 2 + 12 + 30 + 323 + 299 = 666.

It is not a de Polignac number, because 21230323299 - 2⁷ = 21230323171 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21230323199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8804404 + ... + 8806814.

It is an arithmetic number, because the mean of its divisors is an integer number (687637080).

Almost surely, 2^21230323299 is an apocalyptic number.

21230323299 is a deficient number, since it is larger than the sum of its proper divisors (11776256541).

21230323299 is a wasteful number, since it uses less digits than its factorization.

21230323299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3360 (or 3357 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 36.

The spelling of 21230323299 in words is "twenty-one billion, two hundred thirty million, three hundred twenty-three thousand, two hundred ninety-nine".