33021331213 has 8 divisors (see below), whose sum is σ = 35571733400. Its totient is φ = 30472400448.

The previous prime is 33021331171. The next prime is 33021331271. The reversal of 33021331213 is 31213312033.

It can be written as a sum of positive squares in 4 ways, for example, as 3575800804 + 29445530409 = 59798^2 + 171597^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 33021331213 - 2⁹ = 33021330701 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 (33021361213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321018 + ... + 411211.

It is an arithmetic number, because the mean of its divisors is an integer number (4446466675).

Almost surely, 2^33021331213 is an apocalyptic number.

It is an amenable number.

33021331213 is a deficient number, since it is larger than the sum of its proper divisors (2550402187).

33021331213 is a wasteful number, since it uses less digits than its factorization.

33021331213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 735711.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 33021331213 its reverse (31213312033), we get a palindrome (64234643246).

The spelling of 33021331213 in words is "thirty-three billion, twenty-one million, three hundred thirty-one thousand, two hundred thirteen".