12233220 has 48 divisors (see below), whose sum is σ = 35363328. Its totient is φ = 3156480.

The previous prime is 12233219. The next prime is 12233231. The reversal of 12233220 is 2233221.

12233220 = T₂₇₅ + T₂₇₆ + ... + T₄₅₄.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12233220.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1429 + ... + 5148.

It is an arithmetic number, because the mean of its divisors is an integer number (736736).

Almost surely, 2^12233220 is an apocalyptic number.

12233220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12233220 is an abundant number, since it is smaller than the sum of its proper divisors (23130108).

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

12233220 is a wasteful number, since it uses less digits than its factorization.

12233220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6620 (or 6618 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 12233220 is about 3497.6020356810. The cubic root of 12233220 is about 230.4165105597.

Adding to 12233220 its reverse (2233221), we get a palindrome (14466441).

Subtracting from 12233220 its reverse (2233221), we obtain a palindrome (9999999).

The spelling of 12233220 in words is "twelve million, two hundred thirty-three thousand, two hundred twenty".