213440012 has 12 divisors (see below), whose sum is σ = 373936416. Its totient is φ = 106601040.

The previous prime is 213440011. The next prime is 213440027. The reversal of 213440012 is 210044312.

It is not an unprimeable number, because it can be changed into a prime (213440011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25643 + ... + 32930.

It is an arithmetic number, because the mean of its divisors is an integer number (31161368).

Almost surely, 2^213440012 is an apocalyptic number.

It is an amenable number.

213440012 is a deficient number, since it is larger than the sum of its proper divisors (160496404).

213440012 is a wasteful number, since it uses less digits than its factorization.

213440012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59488 (or 59486 counting only the distinct ones).

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

The square root of 213440012 is about 14609.5863048890. The cubic root of 213440012 is about 597.6202142530.

Adding to 213440012 its reverse (210044312), we get a palindrome (423484324).

The spelling of 213440012 in words is "two hundred thirteen million, four hundred forty thousand, twelve".