13212211211 has 4 divisors (see below), whose sum is σ = 13348419672. Its totient is φ = 13076002752.

The previous prime is 13212211189. The next prime is 13212211231. The reversal of 13212211211 is 11211221231.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13212211211 - 2¹⁸ = 13211949067 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13212211211.

It is not an unprimeable number, because it can be changed into a prime (13212211231) 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, 68104085 + ... + 68104278.

It is an arithmetic number, because the mean of its divisors is an integer number (3337104918).

Almost surely, 2^13212211211 is an apocalyptic number.

13212211211 is a deficient number, since it is larger than the sum of its proper divisors (136208461).

13212211211 is an equidigital number, since it uses as much as digits as its factorization.

13212211211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136208460.

The product of its digits is 48, while the sum is 17.

Adding to 13212211211 its reverse (11211221231), we get a palindrome (24423432442).

The spelling of 13212211211 in words is "thirteen billion, two hundred twelve million, two hundred eleven thousand, two hundred eleven".