12220012111 has 4 divisors (see below), whose sum is σ = 12283991424. Its totient is φ = 12156032800.

The previous prime is 12220012093. The next prime is 12220012177. The reversal of 12220012111 is 11121002221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12220012111 - 2⁷ = 12220011983 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12220012091 and 12220012100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220013111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31989370 + ... + 31989751.

It is an arithmetic number, because the mean of its divisors is an integer number (3070997856).

Almost surely, 2^12220012111 is an apocalyptic number.

12220012111 is a deficient number, since it is larger than the sum of its proper divisors (63979313).

12220012111 is an equidigital number, since it uses as much as digits as its factorization.

12220012111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63979312.

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

Adding to 12220012111 its reverse (11121002221), we get a palindrome (23341014332).

The spelling of 12220012111 in words is "twelve billion, two hundred twenty million, twelve thousand, one hundred eleven".