21233010223 has 2 divisors, whose sum is σ = 21233010224. Its totient is φ = 21233010222.

The previous prime is 21233010209. The next prime is 21233010229. The reversal of 21233010223 is 32201033212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21233010223 - 2⁹ = 21233009711 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21233010223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21233010229) 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, 10616505111 + 10616505112.

It is an arithmetic number, because the mean of its divisors is an integer number (10616505112).

Almost surely, 2^21233010223 is an apocalyptic number.

21233010223 is a deficient number, since it is larger than the sum of its proper divisors (1).

21233010223 is an equidigital number, since it uses as much as digits as its factorization.

21233010223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21233010223 its reverse (32201033212), we get a palindrome (53434043435).

The spelling of 21233010223 in words is "twenty-one billion, two hundred thirty-three million, ten thousand, two hundred twenty-three".