12120000111001 has 4 divisors (see below), whose sum is σ = 12141759537252. Its totient is φ = 12098240684752.

The previous prime is 12120000110993. The next prime is 12120000111047. The reversal of 12120000111001 is 10011100002121.

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 881112632976 + 11238887478025 = 938676^2 + 3352445^2 .

It is a cyclic number.

It is not a de Polignac number, because 12120000111001 - 2³ = 12120000110993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12120000181001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10879712290 + ... + 10879713403.

It is an arithmetic number, because the mean of its divisors is an integer number (3035439884313).

Almost surely, 2^{12120000111001} is an apocalyptic number.

It is an amenable number.

12120000111001 is a deficient number, since it is larger than the sum of its proper divisors (21759426251).

12120000111001 is an equidigital number, since it uses as much as digits as its factorization.

12120000111001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21759426250.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 12120000111001 its reverse (10011100002121), we get a palindrome (22131100113122).

The spelling of 12120000111001 in words is "twelve trillion, one hundred twenty billion, one hundred eleven thousand, one".