33012232020 has 120 divisors (see below), whose sum is σ = 103629460704. Its totient is φ = 8797408704.

The previous prime is 33012232009. The next prime is 33012232037. The reversal of 33012232020 is 2023221033.

It is a happy number.

33012232020 is a `hidden beast` number, since 3 + 301 + 22 + 320 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 33012231984 and 33012232002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2785347 + ... + 2797173.

Almost surely, 2^33012232020 is an apocalyptic number.

33012232020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33012232020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51814730352).

33012232020 is an abundant number, since it is smaller than the sum of its proper divisors (70617228684).

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

33012232020 is a wasteful number, since it uses less digits than its factorization.

33012232020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13571 (or 13560 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 33012232020 its reverse (2023221033), we get a palindrome (35035453053).

The spelling of 33012232020 in words is "thirty-three billion, twelve million, two hundred thirty-two thousand, twenty".