12111122020111 has 8 divisors (see below), whose sum is σ = 12123953742384. Its totient is φ = 12098294725440.

The previous prime is 12111122020073. The next prime is 12111122020121. The reversal of 12111122020111 is 11102022111121.

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 12111122020111 - 2¹⁵ = 12111121987343 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 (12111122020121) 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, 4381131 + ... + 6589123.

It is an arithmetic number, because the mean of its divisors is an integer number (1515494217798).

Almost surely, 2^{12111122020111} is an apocalyptic number.

12111122020111 is a deficient number, since it is larger than the sum of its proper divisors (12831722273).

12111122020111 is a wasteful number, since it uses less digits than its factorization.

12111122020111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2213801.

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

Adding to 12111122020111 its reverse (11102022111121), we get a palindrome (23213144131232).

The spelling of 12111122020111 in words is "twelve trillion, one hundred eleven billion, one hundred twenty-two million, twenty thousand, one hundred eleven".