30112121424 has 160 divisors (see below), whose sum is σ = 102089180160. Its totient is φ = 7409664000.

The previous prime is 30112121423. The next prime is 30112121489. The reversal of 30112121424 is 42412121103.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 30112121424.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30112121423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 144177 + ... + 284624.

It is an arithmetic number, because the mean of its divisors is an integer number (638057376).

Almost surely, 2^30112121424 is an apocalyptic number.

It is an amenable number.

30112121424 is an abundant number, since it is smaller than the sum of its proper divisors (71977058736).

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

30112121424 is a wasteful number, since it uses less digits than its factorization.

30112121424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428849 (or 428843 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 30112121424 its reverse (42412121103), we get a palindrome (72524242527).

The spelling of 30112121424 in words is "thirty billion, one hundred twelve million, one hundred twenty-one thousand, four hundred twenty-four".