33043203421 has 2 divisors, whose sum is σ = 33043203422. Its totient is φ = 33043203420.

The previous prime is 33043203419. The next prime is 33043203439. The reversal of 33043203421 is 12430234033.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32792139396 + 251064025 = 181086^2 + 15845^2 .

It is a cyclic number.

It is not a de Polignac number, because 33043203421 - 2¹ = 33043203419 is a prime.

It is a super-2 number, since 2×33043203421² (a number of 22 digits) contains 22 as substring.

Together with 33043203419, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33043203121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16521601710 + 16521601711.

It is an arithmetic number, because the mean of its divisors is an integer number (16521601711).

Almost surely, 2^33043203421 is an apocalyptic number.

It is an amenable number.

33043203421 is a deficient number, since it is larger than the sum of its proper divisors (1).

33043203421 is an equidigital number, since it uses as much as digits as its factorization.

33043203421 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 33043203421 its reverse (12430234033), we get a palindrome (45473437454).

The spelling of 33043203421 in words is "thirty-three billion, forty-three million, two hundred three thousand, four hundred twenty-one".