30133212 has 12 divisors (see below), whose sum is σ = 70310856. Its totient is φ = 10044400.

The previous prime is 30133199. The next prime is 30133217. The reversal of 30133212 is 21233103.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 30133191 and 30133200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30133217) 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, 1255539 + ... + 1255562.

It is an arithmetic number, because the mean of its divisors is an integer number (5859238).

Almost surely, 2^30133212 is an apocalyptic number.

It is an amenable number.

30133212 is an abundant number, since it is smaller than the sum of its proper divisors (40177644).

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

30133212 is a wasteful number, since it uses less digits than its factorization.

30133212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2511108 (or 2511106 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 30133212 is about 5489.3726417506. The cubic root of 30133212 is about 311.1824833795.

Adding to 30133212 its reverse (21233103), we get a palindrome (51366315).

The spelling of 30133212 in words is "thirty million, one hundred thirty-three thousand, two hundred twelve".