33220310213 has 8 divisors (see below), whose sum is σ = 33364963800. Its totient is φ = 33075813888.

The previous prime is 33220310161. The next prime is 33220310273. The reversal of 33220310213 is 31201302233.

It can be written as a sum of positive squares in 4 ways, for example, as 465825889 + 32754484324 = 21583^2 + 180982^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33220310213 is a prime.

It is a super-2 number, since 2×33220310213² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33220310273) 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 7 ways as a sum of consecutive naturals, for example, 394445 + ... + 471197.

It is an arithmetic number, because the mean of its divisors is an integer number (4170620475).

Almost surely, 2^33220310213 is an apocalyptic number.

It is an amenable number.

33220310213 is a deficient number, since it is larger than the sum of its proper divisors (144653587).

33220310213 is a wasteful number, since it uses less digits than its factorization.

33220310213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78631.

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

Adding to 33220310213 its reverse (31201302233), we get a palindrome (64421612446).

The spelling of 33220310213 in words is "thirty-three billion, two hundred twenty million, three hundred ten thousand, two hundred thirteen".