212389226 has 12 divisors (see below), whose sum is σ = 370597698. Its totient is φ = 91023912.

The previous prime is 212389223. The next prime is 212389231. The reversal of 212389226 is 622983212.

212389226 is digitally balanced in base 2, because in such base 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., 181575625 + 30813601 = 13475^2 + 5551^2 .

It is not an unprimeable number, because it can be changed into a prime (212389223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1083521 + ... + 1083716.

Almost surely, 2^212389226 is an apocalyptic number.

212389226 is a deficient number, since it is larger than the sum of its proper divisors (158208472).

212389226 is a wasteful number, since it uses less digits than its factorization.

212389226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2167253 (or 2167246 counting only the distinct ones).

The product of its digits is 20736, while the sum is 35.

The square root of 212389226 is about 14573.5797249681. The cubic root of 212389226 is about 596.6378862488.

The spelling of 212389226 in words is "two hundred twelve million, three hundred eighty-nine thousand, two hundred twenty-six".