30211212 has 24 divisors (see below), whose sum is σ = 70610176. Its totient is φ = 10053648.

The previous prime is 30211189. The next prime is 30211217. The reversal of 30211212 is 21211203.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (30211217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6993 + ... + 10455.

Almost surely, 2^30211212 is an apocalyptic number.

It is an amenable number.

30211212 is an abundant number, since it is smaller than the sum of its proper divisors (40398964).

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

30211212 is a wasteful number, since it uses less digits than its factorization.

30211212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4197 (or 4195 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 30211212 is about 5496.4726870967. The cubic root of 30211212 is about 311.4507512830.

Adding to 30211212 its reverse (21211203), we get a palindrome (51422415).

Subtracting from 30211212 its reverse (21211203), we obtain a palindrome (9000009).

The spelling of 30211212 in words is "thirty million, two hundred eleven thousand, two hundred twelve".