123030303220 has 192 divisors, whose sum is σ = 302882291712. Its totient is φ = 41483520000.

The previous prime is 123030303199. The next prime is 123030303239. The reversal of 123030303220 is 22303030321.

It is a happy number.

It is a super-3 number, since 3×123030303220³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 73980109 + ... + 73981771.

It is an arithmetic number, because the mean of its divisors is an integer number (1577511936).

Almost surely, 2^123030303220 is an apocalyptic number.

123030303220 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 123030303220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151441145856).

123030303220 is an abundant number, since it is smaller than the sum of its proper divisors (179851988492).

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

123030303220 is a wasteful number, since it uses less digits than its factorization.

123030303220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1982 (or 1980 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 123030303220 its reverse (22303030321), we get a palindrome (145333333541).

The spelling of 123030303220 in words is "one hundred twenty-three billion, thirty million, three hundred three thousand, two hundred twenty".