12110011111001 has 4 divisors (see below), whose sum is σ = 12137978804532. Its totient is φ = 12082043417472.

The previous prime is 12110011110973. The next prime is 12110011111043. The reversal of 12110011111001 is 10011111001121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1937107240000 + 10172903871001 = 1391800^2 + 3189499^2 .

It is a cyclic number.

It is not a de Polignac number, because 12110011111001 - 2¹⁸ = 12110010848857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12110011111091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13983846116 + ... + 13983846981.

It is an arithmetic number, because the mean of its divisors is an integer number (3034494701133).

Almost surely, 2^{12110011111001} is an apocalyptic number.

It is an amenable number.

12110011111001 is a deficient number, since it is larger than the sum of its proper divisors (27967693531).

12110011111001 is an equidigital number, since it uses as much as digits as its factorization.

12110011111001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27967693530.

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

Adding to 12110011111001 its reverse (10011111001121), we get a palindrome (22121122112122).

It can be divided in two parts, 121 and 10011111001, that multiplied together give a palindrome (1211344431121).

The spelling of 12110011111001 in words is "twelve trillion, one hundred ten billion, eleven million, one hundred eleven thousand, one".