212107712 has 28 divisors (see below), whose sum is σ = 421492680. Its totient is φ = 105904896.

The previous prime is 212107703. The next prime is 212107723. The reversal of 212107712 is 217701212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54239 + ... + 58017.

It is an arithmetic number, because the mean of its divisors is an integer number (15053310).

Almost surely, 2^212107712 is an apocalyptic number.

It is an amenable number.

212107712 is a deficient number, since it is larger than the sum of its proper divisors (209384968).

212107712 is an equidigital number, since it uses as much as digits as its factorization.

212107712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4668 (or 4658 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 23.

The square root of 212107712 is about 14563.9181541232. The cubic root of 212107712 is about 596.3741626051.

Adding to 212107712 its reverse (217701212), we get a palindrome (429808924).

The spelling of 212107712 in words is "two hundred twelve million, one hundred seven thousand, seven hundred twelve".