12222220111 has 8 divisors (see below), whose sum is σ = 12508341120. Its totient is φ = 11936184792.

The previous prime is 12222220097. The next prime is 12222220123. The reversal of 12222220111 is 11102222221.

It is a happy number.

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 12222220111 - 2⁹ = 12222219599 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 (12222220151) 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, 336126 + ... + 370708.

It is an arithmetic number, because the mean of its divisors is an integer number (1563542640).

Almost surely, 2^12222220111 is an apocalyptic number.

12222220111 is a deficient number, since it is larger than the sum of its proper divisors (286121009).

12222220111 is an equidigital number, since it uses as much as digits as its factorization.

12222220111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42845.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12222220111 its reverse (11102222221), we get a palindrome (23324442332).

The spelling of 12222220111 in words is "twelve billion, two hundred twenty-two million, two hundred twenty thousand, one hundred eleven".