12245215211 has 4 divisors (see below), whose sum is σ = 12253122000. Its totient is φ = 12237308424.

The previous prime is 12245215207. The next prime is 12245215219. The reversal of 12245215211 is 11251254221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11251254221 = 11833 ⋅950837.

It is a cyclic number.

It is not a de Polignac number, because 12245215211 - 2² = 12245215207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12245215219) 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, 3951071 + ... + 3954168.

It is an arithmetic number, because the mean of its divisors is an integer number (3063280500).

Almost surely, 2^12245215211 is an apocalyptic number.

12245215211 is a deficient number, since it is larger than the sum of its proper divisors (7906789).

12245215211 is an equidigital number, since it uses as much as digits as its factorization.

12245215211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7906788.

The product of its digits is 1600, while the sum is 26.

Adding to 12245215211 its reverse (11251254221), we get a palindrome (23496469432).

The spelling of 12245215211 in words is "twelve billion, two hundred forty-five million, two hundred fifteen thousand, two hundred eleven".