12100111011 has 12 divisors (see below), whose sum is σ = 17480998392. Its totient is φ = 8065328256.

The previous prime is 12100110989. The next prime is 12100111027. The reversal of 12100111011 is 11011100121.

It is not a de Polignac number, because 12100111011 - 2¹¹ = 12100108963 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 12100110984 and 12100111002.

It is not an unprimeable number, because it can be changed into a prime (12100111211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62061 + ... + 167486.

It is an arithmetic number, because the mean of its divisors is an integer number (1456749866).

Almost surely, 2^12100111011 is an apocalyptic number.

12100111011 is a deficient number, since it is larger than the sum of its proper divisors (5380887381).

12100111011 is a wasteful number, since it uses less digits than its factorization.

12100111011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235410 (or 235407 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 12100111011 its reverse (11011100121), we get a palindrome (23111211132).

The spelling of 12100111011 in words is "twelve billion, one hundred million, one hundred eleven thousand, eleven".