12011111122110 has 64 divisors (see below), whose sum is σ = 29881924185600. Its totient is φ = 3086165722752.

The previous prime is 12011111122093. The next prime is 12011111122183. The reversal of 12011111122110 is 1122111111021.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12011111122110.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13750720 + ... + 14598099.

It is an arithmetic number, because the mean of its divisors is an integer number (466905065400).

Almost surely, 2^{12011111122110} is an apocalyptic number.

12011111122110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12011111122110 is an abundant number, since it is smaller than the sum of its proper divisors (17870813063490).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12011111122110 is a wasteful number, since it uses less digits than its factorization.

12011111122110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28349345.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 12011111122110 its reverse (1122111111021), we get a palindrome (13133222233131).

The spelling of 12011111122110 in words is "twelve trillion, eleven billion, one hundred eleven million, one hundred twenty-two thousand, one hundred ten".