12113012211 has 4 divisors (see below), whose sum is σ = 16150682952. Its totient is φ = 8075341472.

The previous prime is 12113012207. The next prime is 12113012239. The reversal of 12113012211 is 11221031121.

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 12113012211 - 2² = 12113012207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12113012311) 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 3 ways as a sum of consecutive naturals, for example, 2018835366 + ... + 2018835371.

It is an arithmetic number, because the mean of its divisors is an integer number (4037670738).

Almost surely, 2^12113012211 is an apocalyptic number.

12113012211 is a deficient number, since it is larger than the sum of its proper divisors (4037670741).

12113012211 is an equidigital number, since it uses as much as digits as its factorization.

12113012211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4037670740.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 12113012211 its reverse (11221031121), we get a palindrome (23334043332).

The spelling of 12113012211 in words is "twelve billion, one hundred thirteen million, twelve thousand, two hundred eleven".