12000111001 has 4 divisors (see below), whose sum is σ = 12094600192. Its totient is φ = 11905621812.

The previous prime is 12000110971. The next prime is 12000111037. The reversal of 12000111001 is 10011100021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12000111001 - 2²¹ = 11998013849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12000111061) 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, 47244405 + ... + 47244658.

It is an arithmetic number, because the mean of its divisors is an integer number (3023650048).

Almost surely, 2^12000111001 is an apocalyptic number.

It is an amenable number.

12000111001 is a deficient number, since it is larger than the sum of its proper divisors (94489191).

12000111001 is an equidigital number, since it uses as much as digits as its factorization.

12000111001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94489190.

The product of its (nonzero) digits is 2, while the sum is 7.

Adding to 12000111001 its reverse (10011100021), we get a palindrome (22011211022).

The spelling of 12000111001 in words is "twelve billion, one hundred eleven thousand, one".