12211211223 has 12 divisors (see below), whose sum is σ = 17663303320. Its totient is φ = 8129321136.

The previous prime is 12211211219. The next prime is 12211211263. The reversal of 12211211223 is 32211211221.

It is not a de Polignac number, because 12211211223 - 2² = 12211211219 is a prime.

It is a super-2 number, since 2×12211211223² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12211211196 and 12211211205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211211263) 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, 950461 + ... + 963222.

Almost surely, 2^12211211223 is an apocalyptic number.

12211211223 is a deficient number, since it is larger than the sum of its proper divisors (5452092097).

12211211223 is a wasteful number, since it uses less digits than its factorization.

12211211223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1914398 (or 1914395 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

Adding to 12211211223 its reverse (32211211221), we get a palindrome (44422422444).

The spelling of 12211211223 in words is "twelve billion, two hundred eleven million, two hundred eleven thousand, two hundred twenty-three".