12122102112111 has 28 divisors (see below), whose sum is σ = 18175229669688. Its totient is φ = 8081227684944.

The previous prime is 12122102112053. The next prime is 12122102112121. The reversal of 12122102112111 is 11121120122121.

It is a happy number.

12122102112111 is a `hidden beast` number, since 1 + 21 + 221 + 0 + 211 + 211 + 1 = 666.

It is not a de Polignac number, because 12122102112111 - 2⁶ = 12122102112047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122102112121) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 39924076 + ... + 40226558.

It is an arithmetic number, because the mean of its divisors is an integer number (649115345346).

Almost surely, 2^{12122102112111} is an apocalyptic number.

12122102112111 is a deficient number, since it is larger than the sum of its proper divisors (6053127557577).

12122102112111 is an frugal number, since it uses more digits than its factorization.

12122102112111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357474 (or 357459 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 12122102112111 its reverse (11121120122121), we get a palindrome (23243222234232).

The spelling of 12122102112111 in words is "twelve trillion, one hundred twenty-two billion, one hundred two million, one hundred twelve thousand, one hundred eleven".