30213123212 has 12 divisors (see below), whose sum is σ = 52888101000. Its totient is φ = 15102237216.

The previous prime is 30213123203. The next prime is 30213123233. The reversal of 30213123212 is 21232131203.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1065353 + ... + 1093344.

It is an arithmetic number, because the mean of its divisors is an integer number (4407341750).

Almost surely, 2^30213123212 is an apocalyptic number.

It is an amenable number.

30213123212 is a deficient number, since it is larger than the sum of its proper divisors (22674977788).

30213123212 is a wasteful number, since it uses less digits than its factorization.

30213123212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2162200 (or 2162198 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 30213123212 its reverse (21232131203), we get a palindrome (51445254415).

The spelling of 30213123212 in words is "thirty billion, two hundred thirteen million, one hundred twenty-three thousand, two hundred twelve".