33013212 has 12 divisors (see below), whose sum is σ = 77030856. Its totient is φ = 11004400.

The previous prime is 33013199. The next prime is 33013217. The reversal of 33013212 is 21231033.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 33013191 and 33013200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33013217) 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 3 ways as a sum of consecutive naturals, for example, 1375539 + ... + 1375562.

It is an arithmetic number, because the mean of its divisors is an integer number (6419238).

Almost surely, 2^33013212 is an apocalyptic number.

It is an amenable number.

33013212 is an abundant number, since it is smaller than the sum of its proper divisors (44017644).

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

33013212 is a wasteful number, since it uses less digits than its factorization.

33013212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2751108 (or 2751106 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 33013212 is about 5745.7124884561. The cubic root of 33013212 is about 320.7962332918.

Adding to 33013212 its reverse (21231033), we get a palindrome (54244245).

The spelling of 33013212 in words is "thirty-three million, thirteen thousand, two hundred twelve".