33020321212 has 24 divisors (see below), whose sum is σ = 63158417280. Its totient is φ = 15037716480.

The previous prime is 33020321209. The next prime is 33020321239. The reversal of 33020321212 is 21212302033.

It is a super-2 number, since 2×33020321212² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33020321212.

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, 7830037 + ... + 7834252.

It is an arithmetic number, because the mean of its divisors is an integer number (2631600720).

Almost surely, 2^33020321212 is an apocalyptic number.

It is an amenable number.

33020321212 is a deficient number, since it is larger than the sum of its proper divisors (30138096068).

33020321212 is a wasteful number, since it uses less digits than its factorization.

33020321212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15664341 (or 15664339 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 33020321212 its reverse (21212302033), we get a palindrome (54232623245).

The spelling of 33020321212 in words is "thirty-three billion, twenty million, three hundred twenty-one thousand, two hundred twelve".