12111112102211 has 4 divisors (see below), whose sum is σ = 12111124602000. Its totient is φ = 12111099602424.

The previous prime is 12111112102171. The next prime is 12111112102249. The reversal of 12111112102211 is 11220121111121.

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 12111112102211 - 2⁶ = 12111112102147 is a prime.

It is a super-2 number, since 2×12111112102211² (a number of 27 digits) contains 22 as substring.

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 12111112102211.

It is not an unprimeable number, because it can be changed into a prime (12111112108211) 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, 4662071 + ... + 6779168.

It is an arithmetic number, because the mean of its divisors is an integer number (3027781150500).

Almost surely, 2^{12111112102211} is an apocalyptic number.

12111112102211 is a deficient number, since it is larger than the sum of its proper divisors (12499789).

12111112102211 is a wasteful number, since it uses less digits than its factorization.

12111112102211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12499788.

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

Adding to 12111112102211 its reverse (11220121111121), we get a palindrome (23331233213332).

The spelling of 12111112102211 in words is "twelve trillion, one hundred eleven billion, one hundred twelve million, one hundred two thousand, two hundred eleven".