12211223213 has 12 divisors (see below), whose sum is σ = 14216037120. Its totient is φ = 10458550872.

The previous prime is 12211223197. The next prime is 12211223231. The reversal of 12211223213 is 31232211221.

It is not a de Polignac number, because 12211223213 - 2⁴ = 12211223197 is a prime.

It is a super-3 number, since 3×12211223213³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211223243) 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, 34253 + ... + 159986.

It is an arithmetic number, because the mean of its divisors is an integer number (1184669760).

Almost surely, 2^12211223213 is an apocalyptic number.

It is an amenable number.

12211223213 is a deficient number, since it is larger than the sum of its proper divisors (2004813907).

12211223213 is a wasteful number, since it uses less digits than its factorization.

12211223213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195536 (or 195529 counting only the distinct ones).

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

Adding to 12211223213 its reverse (31232211221), we get a palindrome (43443434434).

The spelling of 12211223213 in words is "twelve billion, two hundred eleven million, two hundred twenty-three thousand, two hundred thirteen".