33041021213 has 4 divisors (see below), whose sum is σ = 33072519900. Its totient is φ = 33009522528.

The previous prime is 33041021207. The next prime is 33041021227. The reversal of 33041021213 is 31212014033.

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 25336043929 + 7704977284 = 159173^2 + 87778^2 .

It is a cyclic number.

It is not a de Polignac number, because 33041021213 - 2¹⁸ = 33040759069 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 (33041021203) 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, 15747770 + ... + 15749867.

It is an arithmetic number, because the mean of its divisors is an integer number (8268129975).

Almost surely, 2^33041021213 is an apocalyptic number.

It is an amenable number.

33041021213 is a deficient number, since it is larger than the sum of its proper divisors (31498687).

33041021213 is a wasteful number, since it uses less digits than its factorization.

33041021213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31498686.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 33041021213 its reverse (31212014033), we get a palindrome (64253035246).

The spelling of 33041021213 in words is "thirty-three billion, forty-one million, twenty-one thousand, two hundred thirteen".