212220206 has 24 divisors (see below), whose sum is σ = 350899752. Its totient is φ = 96188400.

The previous prime is 212220191. The next prime is 212220247. The reversal of 212220206 is 602022212.

212220206 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 100841 + ... + 102923.

It is an arithmetic number, because the mean of its divisors is an integer number (14620823).

Almost surely, 2^212220206 is an apocalyptic number.

212220206 is a deficient number, since it is larger than the sum of its proper divisors (138679546).

212220206 is a wasteful number, since it uses less digits than its factorization.

212220206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2528 (or 2517 counting only the distinct ones).

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

The square root of 212220206 is about 14567.7797210145. The cubic root of 212220206 is about 596.4795754910.

Adding to 212220206 its reverse (602022212), we get a palindrome (814242418).

The spelling of 212220206 in words is "two hundred twelve million, two hundred twenty thousand, two hundred six".