123030133220 has 48 divisors (see below), whose sum is σ = 275089530240. Its totient is φ = 46058448384.

The previous prime is 123030133181. The next prime is 123030133241. The reversal of 123030133220 is 22331030321.

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 = 123030133192 and 123030133201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 949904 + ... + 1071623.

It is an arithmetic number, because the mean of its divisors is an integer number (5731031880).

Almost surely, 2^123030133220 is an apocalyptic number.

123030133220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123030133220 is an abundant number, since it is smaller than the sum of its proper divisors (152059397020).

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

123030133220 is a wasteful number, since it uses less digits than its factorization.

123030133220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2021732 (or 2021730 counting only the distinct ones).

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

Adding to 123030133220 its reverse (22331030321), we get a palindrome (145361163541).

The spelling of 123030133220 in words is "one hundred twenty-three billion, thirty million, one hundred thirty-three thousand, two hundred twenty".