13212111213 has 12 divisors (see below), whose sum is σ = 21810469408. Its totient is φ = 7549777800.

The previous prime is 13212111197. The next prime is 13212111217. The reversal of 13212111213 is 31211121231.

It is not a de Polignac number, because 13212111213 - 2⁴ = 13212111197 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13212111217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 104857963 + ... + 104858088.

Almost surely, 2^13212111213 is an apocalyptic number.

It is an amenable number.

13212111213 is a deficient number, since it is larger than the sum of its proper divisors (8598358195).

13212111213 is a wasteful number, since it uses less digits than its factorization.

13212111213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209716064 (or 209716061 counting only the distinct ones).

The product of its digits is 72, while the sum is 18.

Adding to 13212111213 its reverse (31211121231), we get a palindrome (44423232444).

The spelling of 13212111213 in words is "thirteen billion, two hundred twelve million, one hundred eleven thousand, two hundred thirteen".