30112121320 has 16 divisors (see below), whose sum is σ = 67752273060. Its totient is φ = 12044848512.

The previous prime is 30112121309. The next prime is 30112121321. The reversal of 30112121320 is 2312121103.

It can be written as a sum of positive squares in 2 ways, for example, as 29715553924 + 396567396 = 172382^2 + 19914^2 .

It is a junction number, because it is equal to n+sod(n) for n = 30112121294 and 30112121303.

It is not an unprimeable number, because it can be changed into a prime (30112121321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 376401477 + ... + 376401556.

Almost surely, 2^30112121320 is an apocalyptic number.

It is an amenable number.

30112121320 is an abundant number, since it is smaller than the sum of its proper divisors (37640151740).

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

30112121320 is a wasteful number, since it uses less digits than its factorization.

30112121320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752803044 (or 752803040 counting only the distinct ones).

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

Adding to 30112121320 its reverse (2312121103), we get a palindrome (32424242423).

The spelling of 30112121320 in words is "thirty billion, one hundred twelve million, one hundred twenty-one thousand, three hundred twenty".