12221200111 has 4 divisors (see below), whose sum is σ = 12234243952. Its totient is φ = 12208156272.

The previous prime is 12221200031. The next prime is 12221200133. The reversal of 12221200111 is 11100212221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11100212221 = 7 ⋅1585744603.

It is a cyclic number.

It is not a de Polignac number, because 12221200111 - 2¹⁷ = 12221069039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12221200091 and 12221200100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221200141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6520515 + ... + 6522388.

It is an arithmetic number, because the mean of its divisors is an integer number (3058560988).

Almost surely, 2^12221200111 is an apocalyptic number.

12221200111 is a deficient number, since it is larger than the sum of its proper divisors (13043841).

12221200111 is an equidigital number, since it uses as much as digits as its factorization.

12221200111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13043840.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12221200111 its reverse (11100212221), we get a palindrome (23321412332).

The spelling of 12221200111 in words is "twelve billion, two hundred twenty-one million, two hundred thousand, one hundred eleven".