33530213212 has 24 divisors (see below), whose sum is σ = 59113126800. Its totient is φ = 16640906880.

The previous prime is 33530213201. The next prime is 33530213237. The reversal of 33530213212 is 21231203533.

It is a super-2 number, since 2×33530213212² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 863683 + ... + 901669.

It is an arithmetic number, because the mean of its divisors is an integer number (2463046950).

Almost surely, 2^33530213212 is an apocalyptic number.

It is an amenable number.

33530213212 is a deficient number, since it is larger than the sum of its proper divisors (25582913588).

33530213212 is a wasteful number, since it uses less digits than its factorization.

33530213212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39621 (or 39619 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 25.

Adding to 33530213212 its reverse (21231203533), we get a palindrome (54761416745).

The spelling of 33530213212 in words is "thirty-three billion, five hundred thirty million, two hundred thirteen thousand, two hundred twelve".