12101189111 has 32 divisors (see below), whose sum is σ = 13986846720. Its totient is φ = 10361894400.

The previous prime is 12101189099. The next prime is 12101189131. The reversal of 12101189111 is 11198110121.

It is a de Polignac number, because none of the positive numbers 2^k-12101189111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101189131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11851781 + ... + 11852801.

It is an arithmetic number, because the mean of its divisors is an integer number (437088960).

Almost surely, 2^12101189111 is an apocalyptic number.

12101189111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12101189111 is a deficient number, since it is larger than the sum of its proper divisors (1885657609).

12101189111 is a wasteful number, since it uses less digits than its factorization.

12101189111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1727.

The product of its (nonzero) digits is 144, while the sum is 26.

Adding to 12101189111 its reverse (11198110121), we get a palindrome (23299299232).

The spelling of 12101189111 in words is "twelve billion, one hundred one million, one hundred eighty-nine thousand, one hundred eleven".