33212130320 has 40 divisors (see below), whose sum is σ = 77306414424. Its totient is φ = 13269676032.

The previous prime is 33212130313. The next prime is 33212130353. The reversal of 33212130320 is 2303121233.

It can be written as a sum of positive squares in 4 ways, for example, as 498896896 + 32713233424 = 22336^2 + 180868^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×33212130320² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 33212130292 and 33212130301.

It is an unprimeable number.

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, 166529 + ... + 306848.

Almost surely, 2^33212130320 is an apocalyptic number.

It is an amenable number.

33212130320 is an abundant number, since it is smaller than the sum of its proper divisors (44094284104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

33212130320 is a wasteful number, since it uses less digits than its factorization.

33212130320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474267 (or 474261 counting only the distinct ones).

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

Adding to 33212130320 its reverse (2303121233), we get a palindrome (35515251553).

The spelling of 33212130320 in words is "thirty-three billion, two hundred twelve million, one hundred thirty thousand, three hundred twenty".