21432043224233 has 4 divisors (see below), whose sum is σ = 22363871190528. Its totient is φ = 20500215257940.

The previous prime is 21432043224203. The next prime is 21432043224289. The reversal of 21432043224233 is 33242234023412.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21432043224233 - 2¹⁶ = 21432043158697 is a prime.

It is a super-3 number, since 3×21432043224233³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21432043224193 and 21432043224202.

It is not an unprimeable number, because it can be changed into a prime (21432043224203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 465913983113 + ... + 465913983158.

It is an arithmetic number, because the mean of its divisors is an integer number (5590967797632).

Almost surely, 2^{21432043224233} is an apocalyptic number.

21432043224233 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

21432043224233 is a deficient number, since it is larger than the sum of its proper divisors (931827966295).

21432043224233 is an equidigital number, since it uses as much as digits as its factorization.

21432043224233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 931827966294.

The product of its (nonzero) digits is 165888, while the sum is 35.

Adding to 21432043224233 its reverse (33242234023412), we get a palindrome (54674277247645).

The spelling of 21432043224233 in words is "twenty-one trillion, four hundred thirty-two billion, forty-three million, two hundred twenty-four thousand, two hundred thirty-three".