30123220120 has 32 divisors (see below), whose sum is σ = 77459709600. Its totient is φ = 10327961088.

The previous prime is 30123220109. The next prime is 30123220163. The reversal of 30123220120 is 2102232103.

It is a junction number, because it is equal to n+sod(n) for n = 30123220094 and 30123220103.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 53791185 + ... + 53791744.

It is an arithmetic number, because the mean of its divisors is an integer number (2420615925).

Almost surely, 2^30123220120 is an apocalyptic number.

It is an amenable number.

30123220120 is an abundant number, since it is smaller than the sum of its proper divisors (47336489480).

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

30123220120 is a wasteful number, since it uses less digits than its factorization.

30123220120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107582947 (or 107582943 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 30123220120 its reverse (2102232103), we get a palindrome (32225452223).

The spelling of 30123220120 in words is "thirty billion, one hundred twenty-three million, two hundred twenty thousand, one hundred twenty".