12222221222111 has 8 divisors (see below), whose sum is σ = 12452881194864. Its totient is φ = 11991563176320.

The previous prime is 12222221222093. The next prime is 12222221222147. The reversal of 12222221222111 is 11122212222221.

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

It is a cyclic number.

It is not a de Polignac number, because 12222221222111 - 2⁶ = 12222221222047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12222221222161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23259500 + ... + 23779166.

It is an arithmetic number, because the mean of its divisors is an integer number (1556610149358).

Almost surely, 2^{12222221222111} is an apocalyptic number.

12222221222111 is a deficient number, since it is larger than the sum of its proper divisors (230659972753).

12222221222111 is an equidigital number, since it uses as much as digits as its factorization.

12222221222111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 963481.

The product of its digits is 512, while the sum is 23.

Adding to 12222221222111 its reverse (11122212222221), we get a palindrome (23344433444332).

The spelling of 12222221222111 in words is "twelve trillion, two hundred twenty-two billion, two hundred twenty-one million, two hundred twenty-two thousand, one hundred eleven".