123303103220 has 96 divisors (see below), whose sum is σ = 283680351360. Its totient is φ = 44646819840.

The previous prime is 123303103219. The next prime is 123303103241. The reversal of 123303103220 is 22301303321.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 123303103192 and 123303103201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74412632 + ... + 74414288.

It is an arithmetic number, because the mean of its divisors is an integer number (2955003660).

Almost surely, 2^123303103220 is an apocalyptic number.

123303103220 is a gapful number since it is divisible by the number (10) 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 123303103220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141840175680).

123303103220 is an abundant number, since it is smaller than the sum of its proper divisors (160377248140).

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

123303103220 is a wasteful number, since it uses less digits than its factorization.

123303103220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2913 (or 2911 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 123303103220 its reverse (22301303321), we get a palindrome (145604406541).

The spelling of 123303103220 in words is "one hundred twenty-three billion, three hundred three million, one hundred three thousand, two hundred twenty".