123030504220 has 48 divisors (see below), whose sum is σ = 287832656160. Its totient is φ = 43860208896.

The previous prime is 123030504217. The next prime is 123030504221. The reversal of 123030504220 is 22405030321.

It is a junction number, because it is equal to n+sod(n) for n = 123030504191 and 123030504200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123030504221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8150982 + ... + 8166061.

It is an arithmetic number, because the mean of its divisors is an integer number (5996513670).

Almost surely, 2^123030504220 is an apocalyptic number.

123030504220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123030504220 is an abundant number, since it is smaller than the sum of its proper divisors (164802151940).

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

123030504220 is a wasteful number, since it uses less digits than its factorization.

123030504220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16317094 (or 16317092 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

Adding to 123030504220 its reverse (22405030321), we get a palindrome (145435534541).

The spelling of 123030504220 in words is "one hundred twenty-three billion, thirty million, five hundred four thousand, two hundred twenty".