33021233112 has 128 divisors (see below), whose sum is σ = 95070044160. Its totient is φ = 9362511360.

The previous prime is 33021233111. The next prime is 33021233123. The reversal of 33021233112 is 21133212033.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33021233111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19855593 + ... + 19857255.

It is an arithmetic number, because the mean of its divisors is an integer number (742734720).

Almost surely, 2^33021233112 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 33021233112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47535022080).

33021233112 is an abundant number, since it is smaller than the sum of its proper divisors (62048811048).

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

33021233112 is a wasteful number, since it uses less digits than its factorization.

33021233112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2513 (or 2509 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 33021233112 its reverse (21133212033), we get a palindrome (54154445145).

The spelling of 33021233112 in words is "thirty-three billion, twenty-one million, two hundred thirty-three thousand, one hundred twelve".