12211112211 has 8 divisors (see below), whose sum is σ = 16292040960. Its totient is φ = 8135462472.

The previous prime is 12211112203. The next prime is 12211112213. The reversal of 12211112211 is 11221111221.

It is a happy number.

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

It is not a de Polignac number, because 12211112211 - 2³ = 12211112203 is a prime.

It is a super-2 number, since 2×12211112211² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12211112213) 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, 1314351 + ... + 1323608.

It is an arithmetic number, because the mean of its divisors is an integer number (2036505120).

Almost surely, 2^12211112211 is an apocalyptic number.

12211112211 is a deficient number, since it is larger than the sum of its proper divisors (4080928749).

12211112211 is a wasteful number, since it uses less digits than its factorization.

12211112211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2639505.

The product of its digits is 16, while the sum is 15.

Adding to 12211112211 its reverse (11221111221), we get a palindrome (23432223432).

The spelling of 12211112211 in words is "twelve billion, two hundred eleven million, one hundred twelve thousand, two hundred eleven".