30121132120 has 32 divisors (see below), whose sum is σ = 70719181920. Its totient is φ = 11524606720.

The previous prime is 30121132081. The next prime is 30121132133. The reversal of 30121132120 is 2123112103.

It is a junction number, because it is equal to n+sod(n) for n = 30121132094 and 30121132103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16369261 + ... + 16371100.

It is an arithmetic number, because the mean of its divisors is an integer number (2209974435).

Almost surely, 2^30121132120 is an apocalyptic number.

It is an amenable number.

30121132120 is an abundant number, since it is smaller than the sum of its proper divisors (40598049800).

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

30121132120 is a wasteful number, since it uses less digits than its factorization.

30121132120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32740395 (or 32740391 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 30121132120 its reverse (2123112103), we get a palindrome (32244244223).

The spelling of 30121132120 in words is "thirty billion, one hundred twenty-one million, one hundred thirty-two thousand, one hundred twenty".