212430212 has 6 divisors (see below), whose sum is σ = 371752878. Its totient is φ = 106215104.

The previous prime is 212430199. The next prime is 212430217. The reversal of 212430212 is 212034212.

It can be written as a sum of positive squares in only one way, i.e., 136983616 + 75446596 = 11704^2 + 8686^2 .

It is not an unprimeable number, because it can be changed into a prime (212430217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26553773 + ... + 26553780.

It is an arithmetic number, because the mean of its divisors is an integer number (61958813).

Almost surely, 2^212430212 is an apocalyptic number.

It is an amenable number.

212430212 is a deficient number, since it is larger than the sum of its proper divisors (159322666).

212430212 is a wasteful number, since it uses less digits than its factorization.

212430212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53107557 (or 53107555 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 212430212 is about 14574.9858318971. The cubic root of 212430212 is about 596.6762626895.

Adding to 212430212 its reverse (212034212), we get a palindrome (424464424).

The spelling of 212430212 in words is "two hundred twelve million, four hundred thirty thousand, two hundred twelve".