33004431024421 has 4 divisors (see below), whose sum is σ = 33005365420672. Its totient is φ = 33003496628172.

The previous prime is 33004431024373. The next prime is 33004431024451. The reversal of 33004431024421 is 12442013440033.

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 33004431024421 - 2¹⁹ = 33004430500133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33004431024451) 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, 467145141 + ... + 467215786.

It is an arithmetic number, because the mean of its divisors is an integer number (8251341355168).

Almost surely, 2^{33004431024421} is an apocalyptic number.

It is an amenable number.

33004431024421 is a deficient number, since it is larger than the sum of its proper divisors (934396251).

33004431024421 is an equidigital number, since it uses as much as digits as its factorization.

33004431024421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 934396250.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 33004431024421 its reverse (12442013440033), we get a palindrome (45446444464454).

The spelling of 33004431024421 in words is "thirty-three trillion, four billion, four hundred thirty-one million, twenty-four thousand, four hundred twenty-one".