12221123112111 has 8 divisors (see below), whose sum is σ = 16295471261824. Its totient is φ = 8147095185240.

The previous prime is 12221123112091. The next prime is 12221123112169. The reversal of 12221123112111 is 11121132112221.

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

It is not a de Polignac number, because 12221123112111 - 2¹³ = 12221123103919 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 (12221124112111) 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, 79966645 + ... + 80119326.

It is an arithmetic number, because the mean of its divisors is an integer number (2036933907728).

Almost surely, 2^{12221123112111} is an apocalyptic number.

12221123112111 is a deficient number, since it is larger than the sum of its proper divisors (4074348149713).

12221123112111 is a wasteful number, since it uses less digits than its factorization.

12221123112111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160111421.

The product of its digits is 96, while the sum is 21.

Adding to 12221123112111 its reverse (11121132112221), we get a palindrome (23342255224332).

The spelling of 12221123112111 in words is "twelve trillion, two hundred twenty-one billion, one hundred twenty-three million, one hundred twelve thousand, one hundred eleven".