33023201220 has 36 divisors (see below), whose sum is σ = 100170377580. Its totient is φ = 8806186944.

The previous prime is 33023201213. The next prime is 33023201249. The reversal of 33023201220 is 2210232033.

It is a happy number.

33023201220 is a `hidden beast` number, since 330 + 2 + 320 + 12 + 2 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5002449984 + 28020751236 = 70728^2 + 167394^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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 = 33023201193 and 33023201202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91730935 + ... + 91731294.

Almost surely, 2^33023201220 is an apocalyptic number.

33023201220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

33023201220 is an abundant number, since it is smaller than the sum of its proper divisors (67147176360).

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

33023201220 is a wasteful number, since it uses less digits than its factorization.

33023201220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183462244 (or 183462239 counting only the distinct ones).

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

Adding to 33023201220 its reverse (2210232033), we get a palindrome (35233433253).

The spelling of 33023201220 in words is "thirty-three billion, twenty-three million, two hundred one thousand, two hundred twenty".