13212311222 has 16 divisors (see below), whose sum is σ = 22560152832. Its totient is φ = 5744482920.

The previous prime is 13212311221. The next prime is 13212311227. The reversal of 13212311222 is 22211321231.

It is a junction number, because it is equal to n+sod(n) for n = 13212311194 and 13212311203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13212311221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13055138 + ... + 13056149.

It is an arithmetic number, because the mean of its divisors is an integer number (1410009552).

Almost surely, 2^13212311222 is an apocalyptic number.

13212311222 is a deficient number, since it is larger than the sum of its proper divisors (9347841610).

13212311222 is a wasteful number, since it uses less digits than its factorization.

13212311222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26111323.

The product of its digits is 288, while the sum is 20.

Adding to 13212311222 its reverse (22211321231), we get a palindrome (35423632453).

The spelling of 13212311222 in words is "thirteen billion, two hundred twelve million, three hundred eleven thousand, two hundred twenty-two".