13212111223 has 2 divisors, whose sum is σ = 13212111224. Its totient is φ = 13212111222.

The previous prime is 13212111217. The next prime is 13212111239. The reversal of 13212111223 is 32211121231.

It is a weak prime.

It is an emirp because it is prime and its reverse (32211121231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13212111223 - 2¹³ = 13212103031 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13212111223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13212111823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6606055611 + 6606055612.

It is an arithmetic number, because the mean of its divisors is an integer number (6606055612).

Almost surely, 2^13212111223 is an apocalyptic number.

13212111223 is a deficient number, since it is larger than the sum of its proper divisors (1).

13212111223 is an equidigital number, since it uses as much as digits as its factorization.

13212111223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144, while the sum is 19.

Adding to 13212111223 its reverse (32211121231), we get a palindrome (45423232454).

The spelling of 13212111223 in words is "thirteen billion, two hundred twelve million, one hundred eleven thousand, two hundred twenty-three".