12011110111001 has 16 divisors (see below), whose sum is σ = 12528205347840. Its totient is φ = 11502152202240.

The previous prime is 12011110110983. The next prime is 12011110111061. The reversal of 12011110111001 is 10011101111021.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12011110111001 - 2¹⁴ = 12011110094617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12011110111061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20663105 + ... + 21236433.

It is an arithmetic number, because the mean of its divisors is an integer number (783012834240).

Almost surely, 2^{12011110111001} is an apocalyptic number.

It is an amenable number.

12011110111001 is a deficient number, since it is larger than the sum of its proper divisors (517095236839).

12011110111001 is an equidigital number, since it uses as much as digits as its factorization.

12011110111001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580424.

The product of its (nonzero) digits is 2, while the sum is 11.

Adding to 12011110111001 its reverse (10011101111021), we get a palindrome (22022211222022).

The spelling of 12011110111001 in words is "twelve trillion, eleven billion, one hundred ten million, one hundred eleven thousand, one".