21300310233 has 20 divisors (see below), whose sum is σ = 31845931920. Its totient is φ = 14188179672.

The previous prime is 21300310231. The next prime is 21300310237. The reversal of 21300310233 is 33201300312.

21300310233 is a `hidden beast` number, since 21 + 300 + 310 + 2 + 33 = 666.

It is not a de Polignac number, because 21300310233 - 2¹ = 21300310231 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21300310231) 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 19 ways as a sum of consecutive naturals, for example, 14623 + ... + 206916.

It is an arithmetic number, because the mean of its divisors is an integer number (1592296596).

Almost surely, 2^21300310233 is an apocalyptic number.

It is an amenable number.

21300310233 is a deficient number, since it is larger than the sum of its proper divisors (10545621687).

21300310233 is a wasteful number, since it uses less digits than its factorization.

21300310233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222738 (or 222729 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 21300310233 its reverse (33201300312), we get a palindrome (54501610545).

The spelling of 21300310233 in words is "twenty-one billion, three hundred million, three hundred ten thousand, two hundred thirty-three".