12222220211211 has 16 divisors (see below), whose sum is σ = 16302815997984. Its totient is φ = 8144885969664.

The previous prime is 12222220211161. The next prime is 12222220211219. The reversal of 12222220211211 is 11211202222221.

It is not a de Polignac number, because 12222220211211 - 2¹¹ = 12222220209163 is a prime.

It is a super-2 number, since 2×12222220211211² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12222220211219) 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 15 ways as a sum of consecutive naturals, for example, 191200191 + ... + 191264103.

It is an arithmetic number, because the mean of its divisors is an integer number (1018925999874).

Almost surely, 2^{12222220211211} is an apocalyptic number.

12222220211211 is a deficient number, since it is larger than the sum of its proper divisors (4080595786773).

12222220211211 is a wasteful number, since it uses less digits than its factorization.

12222220211211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88430.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 12222220211211 its reverse (11211202222221), we get a palindrome (23433422433432).

The spelling of 12222220211211 in words is "twelve trillion, two hundred twenty-two billion, two hundred twenty million, two hundred eleven thousand, two hundred eleven".