12111201002111 has 4 divisors (see below), whose sum is σ = 12111413756424. Its totient is φ = 12110988247800.

The previous prime is 12111201002107. The next prime is 12111201002141. The reversal of 12111201002111 is 11120010211121.

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 12111201002111 - 2² = 12111201002107 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 (12111201002141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106291745 + ... + 106405626.

It is an arithmetic number, because the mean of its divisors is an integer number (3027853439106).

Almost surely, 2^{12111201002111} is an apocalyptic number.

12111201002111 is a deficient number, since it is larger than the sum of its proper divisors (212754313).

12111201002111 is an equidigital number, since it uses as much as digits as its factorization.

12111201002111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212754312.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 12111201002111 its reverse (11120010211121), we get a palindrome (23231211213232).

The spelling of 12111201002111 in words is "twelve trillion, one hundred eleven billion, two hundred one million, two thousand, one hundred eleven".