123011330220 has 72 divisors (see below), whose sum is σ = 373450961520. Its totient is φ = 32775189120.

The previous prime is 123011330219. The next prime is 123011330269. The reversal of 123011330220 is 22033110321.

123011330220 is a `hidden beast` number, since 1 + 230 + 113 + 302 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 123011330193 and 123011330202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 76750 + ... + 501909.

It is an arithmetic number, because the mean of its divisors is an integer number (5186818910).

Almost surely, 2^123011330220 is an apocalyptic number.

123011330220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123011330220 is an abundant number, since it is smaller than the sum of its proper divisors (250439631300).

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

123011330220 is a wasteful number, since it uses less digits than its factorization.

123011330220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579855 (or 579850 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 123011330220 its reverse (22033110321), we get a palindrome (145044440541).

The spelling of 123011330220 in words is "one hundred twenty-three billion, eleven million, three hundred thirty thousand, two hundred twenty".