33123011212 has 6 divisors (see below), whose sum is σ = 57965269628. Its totient is φ = 16561505604.

The previous prime is 33123011177. The next prime is 33123011227. The reversal of 33123011212 is 21211032133.

It is a self number, because there is not a number n which added to its sum of digits gives 33123011212.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4140376398 + ... + 4140376405.

Almost surely, 2^33123011212 is an apocalyptic number.

It is an amenable number.

33123011212 is a deficient number, since it is larger than the sum of its proper divisors (24842258416).

33123011212 is a wasteful number, since it uses less digits than its factorization.

33123011212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8280752807 (or 8280752805 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 33123011212 its reverse (21211032133), we get a palindrome (54334043345).

The spelling of 33123011212 in words is "thirty-three billion, one hundred twenty-three million, eleven thousand, two hundred twelve".