33045330421 has 4 divisors (see below), whose sum is σ = 33348498700. Its totient is φ = 32742162144.

The previous prime is 33045330361. The next prime is 33045330467. The reversal of 33045330421 is 12403354033.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14092301521 + 18953028900 = 118711^2 + 137670^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33045330421 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 33045330421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33045330821) 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, 151583976 + ... + 151584193.

It is an arithmetic number, because the mean of its divisors is an integer number (8337124675).

Almost surely, 2^33045330421 is an apocalyptic number.

It is an amenable number.

33045330421 is a deficient number, since it is larger than the sum of its proper divisors (303168279).

33045330421 is a wasteful number, since it uses less digits than its factorization.

33045330421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303168278.

The product of its (nonzero) digits is 12960, while the sum is 28.

Adding to 33045330421 its reverse (12403354033), we get a palindrome (45448684454).

The spelling of 33045330421 in words is "thirty-three billion, forty-five million, three hundred thirty thousand, four hundred twenty-one".