30120212 has 12 divisors (see below), whose sum is σ = 54528180. Its totient is φ = 14540736.

The previous prime is 30120203. The next prime is 30120217. The reversal of 30120212 is 21202103.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 24940036 + 5180176 = 4994^2 + 2276^2 .

It is a junction number, because it is equal to n+sod(n) for n = 30120193 and 30120202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30120217) 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, 129713 + ... + 129944.

It is an arithmetic number, because the mean of its divisors is an integer number (4544015).

Almost surely, 2^30120212 is an apocalyptic number.

It is an amenable number.

30120212 is a deficient number, since it is larger than the sum of its proper divisors (24407968).

30120212 is a wasteful number, since it uses less digits than its factorization.

30120212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259690 (or 259688 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 30120212 is about 5488.1884078446. The cubic root of 30120212 is about 311.1377270691.

Adding to 30120212 its reverse (21202103), we get a palindrome (51322315).

The spelling of 30120212 in words is "thirty million, one hundred twenty thousand, two hundred twelve".