30123104212 has 6 divisors (see below), whose sum is σ = 52715432378. Its totient is φ = 15061552104.

The previous prime is 30123104191. The next prime is 30123104293. The reversal of 30123104212 is 21240132103.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 26661664656 + 3461439556 = 163284^2 + 58834^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 30123104212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3765388023 + ... + 3765388030.

Almost surely, 2^30123104212 is an apocalyptic number.

It is an amenable number.

30123104212 is a deficient number, since it is larger than the sum of its proper divisors (22592328166).

30123104212 is a wasteful number, since it uses less digits than its factorization.

30123104212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7530776057 (or 7530776055 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 30123104212 its reverse (21240132103), we get a palindrome (51363236315).

The spelling of 30123104212 in words is "thirty billion, one hundred twenty-three million, one hundred four thousand, two hundred twelve".