12110021111 has 16 divisors (see below), whose sum is σ = 13385606400. Its totient is φ = 10897442688.

The previous prime is 12110021087. The next prime is 12110021113. The reversal of 12110021111 is 11112001121.

12110021111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12110021111 - 2¹⁸ = 12109758967 is a prime.

It is a super-2 number, since 2×12110021111² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12110021092 and 12110021101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12110021113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1175300 + ... + 1185558.

It is an arithmetic number, because the mean of its divisors is an integer number (836600400).

Almost surely, 2^12110021111 is an apocalyptic number.

12110021111 is a deficient number, since it is larger than the sum of its proper divisors (1275585289).

12110021111 is a wasteful number, since it uses less digits than its factorization.

12110021111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13318.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 12110021111 its reverse (11112001121), we get a palindrome (23222022232).

The spelling of 12110021111 in words is "twelve billion, one hundred ten million, twenty-one thousand, one hundred eleven".