30012421120 has 176 divisors, whose sum is σ = 78754935168. Its totient is φ = 10883727360.

The previous prime is 30012421099. The next prime is 30012421123. The reversal of 30012421120 is 2112421003.

It is a tau number, because it is divible by the number of its divisors (176).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 30012421094 and 30012421103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30012421123) 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, 40944274 + ... + 40945006.

Almost surely, 2^30012421120 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30012421120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39377467584).

30012421120 is an abundant number, since it is smaller than the sum of its proper divisors (48742514048).

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

30012421120 is a wasteful number, since it uses less digits than its factorization.

30012421120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1496 (or 1478 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 30012421120 its reverse (2112421003), we get a palindrome (32124842123).

The spelling of 30012421120 in words is "thirty billion, twelve million, four hundred twenty-one thousand, one hundred twenty".