30121330312 has 8 divisors (see below), whose sum is σ = 56477494350. Its totient is φ = 15060665152.

The previous prime is 30121330297. The next prime is 30121330321. The reversal of 30121330312 is 21303312103.

It can be written as a sum of positive squares in only one way, i.e., 18378140356 + 11743189956 = 135566^2 + 108366^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×30121330312² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30121330312.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1882583137 + ... + 1882583152.

Almost surely, 2^30121330312 is an apocalyptic number.

It is an amenable number.

30121330312 is a deficient number, since it is larger than the sum of its proper divisors (26356164038).

30121330312 is a wasteful number, since it uses less digits than its factorization.

30121330312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3765166295 (or 3765166291 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 30121330312 its reverse (21303312103), we get a palindrome (51424642415).

The spelling of 30121330312 in words is "thirty billion, one hundred twenty-one million, three hundred thirty thousand, three hundred twelve".