33012230220 has 72 divisors (see below), whose sum is σ = 100716020496. Its totient is φ = 8752367232.

The previous prime is 33012230213. The next prime is 33012230221. The reversal of 33012230220 is 2203221033.

It is a happy number.

33012230220 is a `hidden beast` number, since 330 + 12 + 2 + 302 + 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 = 33012230193 and 33012230202.

It is not an unprimeable number, because it can be changed into a prime (33012230221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 498922 + ... + 561201.

It is an arithmetic number, because the mean of its divisors is an integer number (1398833618).

Almost surely, 2^33012230220 is an apocalyptic number.

33012230220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

33012230220 is an abundant number, since it is smaller than the sum of its proper divisors (67703790276).

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

33012230220 is a wasteful number, since it uses less digits than its factorization.

33012230220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060311 (or 1060306 counting only the distinct ones).

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

Adding to 33012230220 its reverse (2203221033), we get a palindrome (35215451253).

The spelling of 33012230220 in words is "thirty-three billion, twelve million, two hundred thirty thousand, two hundred twenty".