123221130330 has 64 divisors (see below), whose sum is σ = 300693254400. Its totient is φ = 32307985920.

The previous prime is 123221130317. The next prime is 123221130341. The reversal of 123221130330 is 33031122321.

It is a junction number, because it is equal to n+sod(n) for n = 123221130297 and 123221130306.

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, 5421931 + ... + 5444609.

It is an arithmetic number, because the mean of its divisors is an integer number (4698332100).

Almost surely, 2^123221130330 is an apocalyptic number.

123221130330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 123221130330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150346627200).

123221130330 is an abundant number, since it is smaller than the sum of its proper divisors (177472124070).

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

123221130330 is a wasteful number, since it uses less digits than its factorization.

123221130330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25719.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 123221130330 its reverse (33031122321), we get a palindrome (156252252651).

The spelling of 123221130330 in words is "one hundred twenty-three billion, two hundred twenty-one million, one hundred thirty thousand, three hundred thirty".