33011223112 has 64 divisors (see below), whose sum is σ = 72065030400. Its totient is φ = 13883408640.

The previous prime is 33011223079. The next prime is 33011223127. The reversal of 33011223112 is 21132211033.

It is a self number, because there is not a number n which added to its sum of digits gives 33011223112.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1488618 + ... + 1510630.

It is an arithmetic number, because the mean of its divisors is an integer number (1126016100).

Almost surely, 2^33011223112 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 33011223112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36032515200).

33011223112 is an abundant number, since it is smaller than the sum of its proper divisors (39053807288).

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

33011223112 is a wasteful number, since it uses less digits than its factorization.

33011223112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22526 (or 22522 counting only the distinct ones).

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

Adding to 33011223112 its reverse (21132211033), we get a palindrome (54143434145).

The spelling of 33011223112 in words is "thirty-three billion, eleven million, two hundred twenty-three thousand, one hundred twelve".