33012021212 has 6 divisors (see below), whose sum is σ = 57771037128. Its totient is φ = 16506010604.

The previous prime is 33012021191. The next prime is 33012021221. The reversal of 33012021212 is 21212021033.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4126502648 + ... + 4126502655.

It is an arithmetic number, because the mean of its divisors is an integer number (9628506188).

Almost surely, 2^33012021212 is an apocalyptic number.

It is an amenable number.

33012021212 is a deficient number, since it is larger than the sum of its proper divisors (24759015916).

33012021212 is a wasteful number, since it uses less digits than its factorization.

33012021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8253005307 (or 8253005305 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 33012021212 its reverse (21212021033), we get a palindrome (54224042245).

The spelling of 33012021212 in words is "thirty-three billion, twelve million, twenty-one thousand, two hundred twelve".