12211113211 has 48 divisors (see below), whose sum is σ = 14612209920. Its totient is φ = 10162152000.

The previous prime is 12211113203. The next prime is 12211113221. The reversal of 12211113211 is 11231111221.

It is a happy number.

It is not a de Polignac number, because 12211113211 - 2³ = 12211113203 is a prime.

It is a super-2 number, since 2×12211113211² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12211113221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9983946 + ... + 9985168.

It is an arithmetic number, because the mean of its divisors is an integer number (304421040).

Almost surely, 2^12211113211 is an apocalyptic number.

12211113211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12211113211 is a deficient number, since it is larger than the sum of its proper divisors (2401096709).

12211113211 is a wasteful number, since it uses less digits than its factorization.

12211113211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1408 (or 1397 counting only the distinct ones).

The product of its digits is 24, while the sum is 16.

Adding to 12211113211 its reverse (11231111221), we get a palindrome (23442224432).

The spelling of 12211113211 in words is "twelve billion, two hundred eleven million, one hundred thirteen thousand, two hundred eleven".