12220120211111 has 4 divisors (see below), whose sum is σ = 12220127356392. Its totient is φ = 12220113065832.

The previous prime is 12220120211083. The next prime is 12220120211113. The reversal of 12220120211111 is 11111202102221.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12220120211111 - 2¹⁴ = 12220120194727 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12220120211111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220120211113) 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, 680345 + ... + 4990301.

It is an arithmetic number, because the mean of its divisors is an integer number (3055031839098).

Almost surely, 2^{12220120211111} is an apocalyptic number.

12220120211111 is a deficient number, since it is larger than the sum of its proper divisors (7145281).

12220120211111 is an equidigital number, since it uses as much as digits as its factorization.

12220120211111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7145280.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 12220120211111 its reverse (11111202102221), we get a palindrome (23331322313332).

The spelling of 12220120211111 in words is "twelve trillion, two hundred twenty billion, one hundred twenty million, two hundred eleven thousand, one hundred eleven".