12122101220111 has 4 divisors (see below), whose sum is σ = 12122151635352. Its totient is φ = 12122050804872.

The previous prime is 12122101220107. The next prime is 12122101220167. The reversal of 12122101220111 is 11102210122121.

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 12122101220111 - 2² = 12122101220107 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 12122101220111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122101225111) 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, 24845216 + ... + 25328421.

It is an arithmetic number, because the mean of its divisors is an integer number (3030537908838).

Almost surely, 2^{12122101220111} is an apocalyptic number.

12122101220111 is a deficient number, since it is larger than the sum of its proper divisors (50415241).

12122101220111 is an equidigital number, since it uses as much as digits as its factorization.

12122101220111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50415240.

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

Adding to 12122101220111 its reverse (11102210122121), we get a palindrome (23224311342232).

The spelling of 12122101220111 in words is "twelve trillion, one hundred twenty-two billion, one hundred one million, two hundred twenty thousand, one hundred eleven".