211223303204 has 12 divisors (see below), whose sum is σ = 370190028684. Its totient is φ = 105454723584.

The previous prime is 211223303201. The next prime is 211223303227. The reversal of 211223303204 is 402303322112.

It can be written as a sum of positive squares in 2 ways, for example, as 92507222500 + 118716080704 = 304150^2 + 344552^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 211223303204.

It is not an unprimeable number, because it can be changed into a prime (211223303201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39228977 + ... + 39234360.

It is an arithmetic number, because the mean of its divisors is an integer number (30849169057).

Almost surely, 2^211223303204 is an apocalyptic number.

It is an amenable number.

211223303204 is a deficient number, since it is larger than the sum of its proper divisors (158966725480).

211223303204 is a wasteful number, since it uses less digits than its factorization.

211223303204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78464014 (or 78464012 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 211223303204 its reverse (402303322112), we get a palindrome (613526625316).

The spelling of 211223303204 in words is "two hundred eleven billion, two hundred twenty-three million, three hundred three thousand, two hundred four".