12231211213 has 8 divisors (see below), whose sum is σ = 13186265400. Its totient is φ = 11278184448.

The previous prime is 12231211207. The next prime is 12231211219. The reversal of 12231211213 is 31211213221.

12231211213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12231211207) and next prime (12231211219).

It can be written as a sum of positive squares in 4 ways, for example, as 289748484 + 11941462729 = 17022^2 + 109277^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12231211213 - 2³³ = 3641276621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12231211219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 494308 + ... + 518461.

It is an arithmetic number, because the mean of its divisors is an integer number (1648283175).

Almost surely, 2^12231211213 is an apocalyptic number.

12231211213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12231211213 is a deficient number, since it is larger than the sum of its proper divisors (955054187).

12231211213 is a wasteful number, since it uses less digits than its factorization.

12231211213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1013711.

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

Adding to 12231211213 its reverse (31211213221), we get a palindrome (43442424434).

The spelling of 12231211213 in words is "twelve billion, two hundred thirty-one million, two hundred eleven thousand, two hundred thirteen".