21300234443233 has 16 divisors (see below), whose sum is σ = 22765190849280. Its totient is φ = 19858853903616.

The previous prime is 21300234443219. The next prime is 21300234443239. The reversal of 21300234443233 is 33234443200312.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21300234443233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21300234443239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34588663 + ... + 35199091.

It is an arithmetic number, because the mean of its divisors is an integer number (1422824428080).

Almost surely, 2^{21300234443233} is an apocalyptic number.

It is an amenable number.

21300234443233 is a deficient number, since it is larger than the sum of its proper divisors (1464956406047).

21300234443233 is a wasteful number, since it uses less digits than its factorization.

21300234443233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629736.

The product of its (nonzero) digits is 124416, while the sum is 34.

Adding to 21300234443233 its reverse (33234443200312), we get a palindrome (54534677643545).

The spelling of 21300234443233 in words is "twenty-one trillion, three hundred billion, two hundred thirty-four million, four hundred forty-three thousand, two hundred thirty-three".