33112220232 has 64 divisors (see below), whose sum is σ = 101883761280. Its totient is φ = 8732892672.

The previous prime is 33112220231. The next prime is 33112220243. The reversal of 33112220232 is 23202221133.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 33112220199 and 33112220208.

It is not an unprimeable number, because it can be changed into a prime (33112220231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7578453 + ... + 7582820.

It is an arithmetic number, because the mean of its divisors is an integer number (1591933770).

Almost surely, 2^33112220232 is an apocalyptic number.

It is an amenable number.

33112220232 is an abundant number, since it is smaller than the sum of its proper divisors (68771541048).

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

33112220232 is a wasteful number, since it uses less digits than its factorization.

33112220232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15161302 (or 15161298 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 33112220232 its reverse (23202221133), we get a palindrome (56314441365).

Subtracting from 33112220232 its reverse (23202221133), we obtain a palindrome (9909999099).

The spelling of 33112220232 in words is "thirty-three billion, one hundred twelve million, two hundred twenty thousand, two hundred thirty-two".