123220330112 has 32 divisors (see below), whose sum is σ = 267794186400. Its totient is φ = 56009240320.

The previous prime is 123220330109. The next prime is 123220330159. The reversal of 123220330112 is 211033022321.

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43755812 + ... + 43758627.

It is an arithmetic number, because the mean of its divisors is an integer number (8368568325).

Almost surely, 2^123220330112 is an apocalyptic number.

It is an amenable number.

123220330112 is an abundant number, since it is smaller than the sum of its proper divisors (144573856288).

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

123220330112 is an equidigital number, since it uses as much as digits as its factorization.

123220330112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87514464 (or 87514452 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 123220330112 its reverse (211033022321), we get a palindrome (334253352433).

The spelling of 123220330112 in words is "one hundred twenty-three billion, two hundred twenty million, three hundred thirty thousand, one hundred twelve".