30123021120 has 112 divisors (see below), whose sum is σ = 97261801920. Its totient is φ = 7896641536.

The previous prime is 30123021107. The next prime is 30123021127. The reversal of 30123021120 is 2112032103.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 30123021120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30123021127) 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, 209277 + ... + 322556.

Almost surely, 2^30123021120 is an apocalyptic number.

30123021120 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30123021120 is an abundant number, since it is smaller than the sum of its proper divisors (67138780800).

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

30123021120 is a wasteful number, since it uses less digits than its factorization.

30123021120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531912 (or 531902 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 30123021120 its reverse (2112032103), we get a palindrome (32235053223).

The spelling of 30123021120 in words is "thirty billion, one hundred twenty-three million, twenty-one thousand, one hundred twenty".