12013222211 has 4 divisors (see below), whose sum is σ = 12157959912. Its totient is φ = 11868484512.

The previous prime is 12013222187. The next prime is 12013222217. The reversal of 12013222211 is 11222231021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12013222211 - 2¹⁸ = 12012960067 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12013222211.

It is not an unprimeable number, because it can be changed into a prime (12013222217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72368726 + ... + 72368891.

It is an arithmetic number, because the mean of its divisors is an integer number (3039489978).

Almost surely, 2^12013222211 is an apocalyptic number.

12013222211 is a deficient number, since it is larger than the sum of its proper divisors (144737701).

12013222211 is an equidigital number, since it uses as much as digits as its factorization.

12013222211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144737700.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 12013222211 its reverse (11222231021), we get a palindrome (23235453232).

The spelling of 12013222211 in words is "twelve billion, thirteen million, two hundred twenty-two thousand, two hundred eleven".