12120001111001 has 16 divisors (see below), whose sum is σ = 14135246822400. Its totient is φ = 10387738347840.

The previous prime is 12120001110911. The next prime is 12120001111003. The reversal of 12120001111001 is 10011110002121.

12120001111001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-12120001111001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12120001111003) 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, 2879105 + ... + 5703441.

It is an arithmetic number, because the mean of its divisors is an integer number (883452926400).

Almost surely, 2^{12120001111001} is an apocalyptic number.

It is an amenable number.

12120001111001 is a deficient number, since it is larger than the sum of its proper divisors (2015245711399).

12120001111001 is an equidigital number, since it uses as much as digits as its factorization.

12120001111001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2836869 (or 2836855 counting only the distinct ones).

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

Adding to 12120001111001 its reverse (10011110002121), we get a palindrome (22131111113122).

The spelling of 12120001111001 in words is "twelve trillion, one hundred twenty billion, one million, one hundred eleven thousand, one".