30115121500 has 48 divisors (see below), whose sum is σ = 66353597856. Its totient is φ = 11939424000.

The previous prime is 30115121471. The next prime is 30115121501. The reversal of 30115121500 is 512151103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30115121501) 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, 210006 + ... + 323005.

It is an arithmetic number, because the mean of its divisors is an integer number (1382366622).

Almost surely, 2^30115121500 is an apocalyptic number.

It is an amenable number.

30115121500 is an abundant number, since it is smaller than the sum of its proper divisors (36238476356).

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

30115121500 is a wasteful number, since it uses less digits than its factorization.

30115121500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533143 (or 533131 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 19.

Adding to 30115121500 its reverse (512151103), we get a palindrome (30627272603).

The spelling of 30115121500 in words is "thirty billion, one hundred fifteen million, one hundred twenty-one thousand, five hundred".