213123213232 has 20 divisors (see below), whose sum is σ = 422997598296. Its totient is φ = 103962542720.

The previous prime is 213123213221. The next prime is 213123213239. The reversal of 213123213232 is 232312321312.

It is a junction number, because it is equal to n+sod(n) for n = 213123213197 and 213123213206.

It is not an unprimeable number, because it can be changed into a prime (213123213239) 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, 162440818 + ... + 162442129.

Almost surely, 2^213123213232 is an apocalyptic number.

It is an amenable number.

213123213232 is a deficient number, since it is larger than the sum of its proper divisors (209874385064).

213123213232 is a wasteful number, since it uses less digits than its factorization.

213123213232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324882996 (or 324882990 counting only the distinct ones).

The product of its digits is 2592, while the sum is 25.

Adding to 213123213232 its reverse (232312321312), we get a palindrome (445435534544).

The spelling of 213123213232 in words is "two hundred thirteen billion, one hundred twenty-three million, two hundred thirteen thousand, two hundred thirty-two".