30123020120 has 64 divisors (see below), whose sum is σ = 71786736000. Its totient is φ = 11336785920.

The previous prime is 30123020113. The next prime is 30123020129. The reversal of 30123020120 is 2102032103.

It is a happy number.

It is a super-2 number, since 2×30123020120² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30123020095 and 30123020104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30123020129) 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, 3117056 + ... + 3126704.

It is an arithmetic number, because the mean of its divisors is an integer number (1121667750).

Almost surely, 2^30123020120 is an apocalyptic number.

It is an amenable number.

30123020120 is an abundant number, since it is smaller than the sum of its proper divisors (41663715880).

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

30123020120 is a wasteful number, since it uses less digits than its factorization.

30123020120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14268 (or 14264 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 30123020120 its reverse (2102032103), we get a palindrome (32225052223).

The spelling of 30123020120 in words is "thirty billion, one hundred twenty-three million, twenty thousand, one hundred twenty".