33231333220 has 12 divisors (see below), whose sum is σ = 69785799804. Its totient is φ = 13292533280.

The previous prime is 33231333181. The next prime is 33231333269. The reversal of 33231333220 is 2233313233.

It can be written as a sum of positive squares in 2 ways, for example, as 14172426304 + 19058906916 = 119048^2 + 138054^2 .

It is a super-2 number, since 2×33231333220² (a number of 22 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 830783311 + ... + 830783350.

It is an arithmetic number, because the mean of its divisors is an integer number (5815483317).

Almost surely, 2^33231333220 is an apocalyptic number.

It is an amenable number.

33231333220 is an abundant number, since it is smaller than the sum of its proper divisors (36554466584).

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

33231333220 is a wasteful number, since it uses less digits than its factorization.

33231333220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1661566670 (or 1661566668 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 25.

Adding to 33231333220 its reverse (2233313233), we get a palindrome (35464646453).

The spelling of 33231333220 in words is "thirty-three billion, two hundred thirty-one million, three hundred thirty-three thousand, two hundred twenty".