12122102111111 has 16 divisors (see below), whose sum is σ = 12785169196800. Its totient is φ = 11461554131328.

The previous prime is 12122102111107. The next prime is 12122102111137. The reversal of 12122102111111 is 11111120122121.

12122102111111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12122102111111 - 2² = 12122102111107 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 12122102111111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122102111311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33893726 + ... + 34249508.

It is an arithmetic number, because the mean of its divisors is an integer number (799073074800).

Almost surely, 2^{12122102111111} is an apocalyptic number.

12122102111111 is a deficient number, since it is larger than the sum of its proper divisors (663067085689).

12122102111111 is a wasteful number, since it uses less digits than its factorization.

12122102111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359318.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 12122102111111 its reverse (11111120122121), we get a palindrome (23233222233232).

The spelling of 12122102111111 in words is "twelve trillion, one hundred twenty-two billion, one hundred two million, one hundred eleven thousand, one hundred eleven".