21023230300243 has 2 divisors, whose sum is σ = 21023230300244. Its totient is φ = 21023230300242.

The previous prime is 21023230300183. The next prime is 21023230300333. The reversal of 21023230300243 is 34200303232012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21023230300243 - 2³³ = 21014640365651 is a prime.

It is not a weakly prime, because it can be changed into another prime (21023230301243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10511615150121 + 10511615150122.

It is an arithmetic number, because the mean of its divisors is an integer number (10511615150122).

Almost surely, 2^{21023230300243} is an apocalyptic number.

21023230300243 is a deficient number, since it is larger than the sum of its proper divisors (1).

21023230300243 is an equidigital number, since it uses as much as digits as its factorization.

21023230300243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 25.

Adding to 21023230300243 its reverse (34200303232012), we get a palindrome (55223533532255).

The spelling of 21023230300243 in words is "twenty-one trillion, twenty-three billion, two hundred thirty million, three hundred thousand, two hundred forty-three".