213244012 has 12 divisors (see below), whose sum is σ = 375649456. Its totient is φ = 105915600.

The previous prime is 213244007. The next prime is 213244013. The reversal of 213244012 is 210442312.

It is a super-2 number, since 2×213244012² = 90946017307712288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (213244013) 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, 175923 + ... + 177130.

Almost surely, 2^213244012 is an apocalyptic number.

It is an amenable number.

213244012 is a deficient number, since it is larger than the sum of its proper divisors (162405444).

213244012 is a wasteful number, since it uses less digits than its factorization.

213244012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353208 (or 353206 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 213244012 is about 14602.8768398559. The cubic root of 213244012 is about 597.4372285148.

Adding to 213244012 its reverse (210442312), we get a palindrome (423686324).

The spelling of 213244012 in words is "two hundred thirteen million, two hundred forty-four thousand, twelve".