123232320220 has 48 divisors (see below), whose sum is σ = 264440816640. Its totient is φ = 48217342784.

The previous prime is 123232320181. The next prime is 123232320271. The reversal of 123232320220 is 22023232321.

It is a junction number, because it is equal to n+sod(n) for n = 123232320191 and 123232320200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1700691 + ... + 1771669.

It is an arithmetic number, because the mean of its divisors is an integer number (5509183680).

Almost surely, 2^123232320220 is an apocalyptic number.

123232320220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123232320220 is an abundant number, since it is smaller than the sum of its proper divisors (141208496420).

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

123232320220 is a wasteful number, since it uses less digits than its factorization.

123232320220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72882 (or 72880 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 123232320220 its reverse (22023232321), we get a palindrome (145255552541).

The spelling of 123232320220 in words is "one hundred twenty-three billion, two hundred thirty-two million, three hundred twenty thousand, two hundred twenty".