213321412 has 12 divisors (see below), whose sum is σ = 389543616. Its totient is φ = 102023240.

The previous prime is 213321349. The next prime is 213321413. The reversal of 213321412 is 214123312.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 213321412.

It is not an unprimeable number, because it can be changed into a prime (213321413) 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, 1159264 + ... + 1159447.

It is an arithmetic number, because the mean of its divisors is an integer number (32461968).

Almost surely, 2^213321412 is an apocalyptic number.

It is an amenable number.

213321412 is a deficient number, since it is larger than the sum of its proper divisors (176222204).

213321412 is a wasteful number, since it uses less digits than its factorization.

213321412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2318738 (or 2318736 counting only the distinct ones).

The product of its digits is 288, while the sum is 19.

The square root of 213321412 is about 14605.5267621541. The cubic root of 213321412 is about 597.5095026003.

Adding to 213321412 its reverse (214123312), we get a palindrome (427444724).

The spelling of 213321412 in words is "two hundred thirteen million, three hundred twenty-one thousand, four hundred twelve".