212040244 has 18 divisors (see below), whose sum is σ = 401811270. Its totient is φ = 97864416.

The previous prime is 212040223. The next prime is 212040263. The reversal of 212040244 is 442040212.

212040244 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 3 ways, for example, as 1790244 + 210250000 = 1338^2 + 14500^2 .

It is a super-2 number, since 2×212040244² = 89922130151159072, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 156159 + ... + 157510.

Almost surely, 2^212040244 is an apocalyptic number.

It is an amenable number.

212040244 is a deficient number, since it is larger than the sum of its proper divisors (189771026).

212040244 is a wasteful number, since it uses less digits than its factorization.

212040244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313699 (or 313684 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 212040244 is about 14561.6016976155. The cubic root of 212040244 is about 596.3109236049.

Adding to 212040244 its reverse (442040212), we get a palindrome (654080456).

The spelling of 212040244 in words is "two hundred twelve million, forty thousand, two hundred forty-four".