33144223421 has 8 divisors (see below), whose sum is σ = 33923510400. Its totient is φ = 32368023648.

The previous prime is 33144223403. The next prime is 33144223477. The reversal of 33144223421 is 12432244133.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33144223421 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33144223121) 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 7 ways as a sum of consecutive naturals, for example, 750071 + ... + 793028.

It is an arithmetic number, because the mean of its divisors is an integer number (4240438800).

Almost surely, 2^33144223421 is an apocalyptic number.

It is an amenable number.

33144223421 is a deficient number, since it is larger than the sum of its proper divisors (779286979).

33144223421 is a wasteful number, since it uses less digits than its factorization.

33144223421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1543603.

The product of its digits is 13824, while the sum is 29.

Adding to 33144223421 its reverse (12432244133), we get a palindrome (45576467554).

The spelling of 33144223421 in words is "thirty-three billion, one hundred forty-four million, two hundred twenty-three thousand, four hundred twenty-one".