12220012211 has 4 divisors (see below), whose sum is σ = 13330922424. Its totient is φ = 11109102000.

The previous prime is 12220012193. The next prime is 12220012219. The reversal of 12220012211 is 11221002221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12220012211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12220012219) 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 3 ways as a sum of consecutive naturals, for example, 555455090 + ... + 555455111.

It is an arithmetic number, because the mean of its divisors is an integer number (3332730606).

Almost surely, 2^12220012211 is an apocalyptic number.

12220012211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12220012211 is a deficient number, since it is larger than the sum of its proper divisors (1110910213).

12220012211 is a wasteful number, since it uses less digits than its factorization.

12220012211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110910212.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12220012211 its reverse (11221002221), we get a palindrome (23441014432).

The spelling of 12220012211 in words is "twelve billion, two hundred twenty million, twelve thousand, two hundred eleven".