212342212 has 6 divisors (see below), whose sum is σ = 371598878. Its totient is φ = 106171104.

The previous prime is 212342209. The next prime is 212342237. The reversal of 212342212 is 212243212.

212342212 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 210134016 + 2208196 = 14496^2 + 1486^2 .

212342212 is strictly pandigital in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 212342212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26542773 + ... + 26542780.

Almost surely, 2^212342212 is an apocalyptic number.

It is an amenable number.

212342212 is a deficient number, since it is larger than the sum of its proper divisors (159256666).

212342212 is a wasteful number, since it uses less digits than its factorization.

212342212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53085557 (or 53085555 counting only the distinct ones).

The product of its digits is 384, while the sum is 19.

The square root of 212342212 is about 14571.9666483286. The cubic root of 212342212 is about 596.5938595279.

Adding to 212342212 its reverse (212243212), we get a palindrome (424585424).

The spelling of 212342212 in words is "two hundred twelve million, three hundred forty-two thousand, two hundred twelve".