21233042023 has 2 divisors, whose sum is σ = 21233042024. Its totient is φ = 21233042022.

The previous prime is 21233042021. The next prime is 21233042053. The reversal of 21233042023 is 32024033212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21233042023 - 2¹ = 21233042021 is a prime.

Together with 21233042021, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 21233041985 and 21233042003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21233042021) 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 as a sum of consecutive naturals, namely, 10616521011 + 10616521012.

It is an arithmetic number, because the mean of its divisors is an integer number (10616521012).

Almost surely, 2^21233042023 is an apocalyptic number.

21233042023 is a deficient number, since it is larger than the sum of its proper divisors (1).

21233042023 is an equidigital number, since it uses as much as digits as its factorization.

21233042023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 21233042023 its reverse (32024033212), we get a palindrome (53257075235).

The spelling of 21233042023 in words is "twenty-one billion, two hundred thirty-three million, forty-two thousand, twenty-three".