33020321213 has 16 divisors (see below), whose sum is σ = 36168228096. Its totient is φ = 29896957440.

The previous prime is 33020321209. The next prime is 33020321239. The reversal of 33020321213 is 31212302033.

It is a cyclic number.

It is not a de Polignac number, because 33020321213 - 2² = 33020321209 is a prime.

It is a super-2 number, since 2×33020321213² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33020321273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3825020 + ... + 3833642.

It is an arithmetic number, because the mean of its divisors is an integer number (2260514256).

Almost surely, 2^33020321213 is an apocalyptic number.

It is an amenable number.

33020321213 is a deficient number, since it is larger than the sum of its proper divisors (3147906883).

33020321213 is a wasteful number, since it uses less digits than its factorization.

33020321213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10004.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 33020321213 its reverse (31212302033), we get a palindrome (64232623246).

The spelling of 33020321213 in words is "thirty-three billion, twenty million, three hundred twenty-one thousand, two hundred thirteen".