12222111122211 has 8 divisors (see below), whose sum is σ = 16675128352960. Its totient is φ = 7958583986472.

The previous prime is 12222111122209. The next prime is 12222111122239. The reversal of 12222111122211 is 11222111122221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12222111122211 - 2¹ = 12222111122209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12222111142211) 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 7 ways as a sum of consecutive naturals, for example, 47372523601 + ... + 47372523858.

It is an arithmetic number, because the mean of its divisors is an integer number (2084391044120).

Almost surely, 2^{12222111122211} is an apocalyptic number.

12222111122211 is a deficient number, since it is larger than the sum of its proper divisors (4453017230749).

12222111122211 is an equidigital number, since it uses as much as digits as its factorization.

12222111122211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94745047505.

The product of its digits is 128, while the sum is 21.

Adding to 12222111122211 its reverse (11222111122221), we get a palindrome (23444222244432).

The spelling of 12222111122211 in words is "twelve trillion, two hundred twenty-two billion, one hundred eleven million, one hundred twenty-two thousand, two hundred eleven".