220123332 has 120 divisors (see below), whose sum is σ = 676190592. Its totient is φ = 61560000.

The previous prime is 220123283. The next prime is 220123333. The reversal of 220123332 is 233321022.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (220123333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 43957 + ... + 48707.

Almost surely, 2^220123332 is an apocalyptic number.

220123332 is a gapful number since it is divisible by the number (22) 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 220123332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (338095296).

220123332 is an abundant number, since it is smaller than the sum of its proper divisors (456067260).

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

220123332 is a wasteful number, since it uses less digits than its factorization.

220123332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4791 (or 4780 counting only the distinct ones).

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

The square root of 220123332 is about 14836.5539125499. The cubic root of 220123332 is about 603.7938604763.

Adding to 220123332 its reverse (233321022), we get a palindrome (453444354).

The spelling of 220123332 in words is "two hundred twenty million, one hundred twenty-three thousand, three hundred thirty-two".