21232424432033 has 4 divisors (see below), whose sum is σ = 21232566068400. Its totient is φ = 21232282795668.

The previous prime is 21232424431997. The next prime is 21232424432057. The reversal of 21232424432033 is 33023442423212.

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 21232424432033 - 2¹⁶ = 21232424366497 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21232424431984 and 21232424432002.

It is not an unprimeable number, because it can be changed into a prime (21232424432633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70593083 + ... + 70893216.

It is an arithmetic number, because the mean of its divisors is an integer number (5308141517100).

Almost surely, 2^{21232424432033} is an apocalyptic number.

It is an amenable number.

21232424432033 is a deficient number, since it is larger than the sum of its proper divisors (141636367).

21232424432033 is a wasteful number, since it uses less digits than its factorization.

21232424432033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141636366.

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

Adding to 21232424432033 its reverse (33023442423212), we get a palindrome (54255866855245).

The spelling of 21232424432033 in words is "twenty-one trillion, two hundred thirty-two billion, four hundred twenty-four million, four hundred thirty-two thousand, thirty-three".