33023111212 has 96 divisors (see below), whose sum is σ = 76613935104. Its totient is φ = 12092889600.

The previous prime is 33023111171. The next prime is 33023111273. The reversal of 33023111212 is 21211132033.

It is a self number, because there is not a number n which added to its sum of digits gives 33023111212.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 195912 + ... + 323152.

It is an arithmetic number, because the mean of its divisors is an integer number (798061824).

Almost surely, 2^33023111212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33023111212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38306967552).

33023111212 is an abundant number, since it is smaller than the sum of its proper divisors (43590823892).

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

33023111212 is a wasteful number, since it uses less digits than its factorization.

33023111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127319 (or 127317 counting only the distinct ones).

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

Adding to 33023111212 its reverse (21211132033), we get a palindrome (54234243245).

The spelling of 33023111212 in words is "thirty-three billion, twenty-three million, one hundred eleven thousand, two hundred twelve".