12111310121201 has 8 divisors (see below), whose sum is σ = 12117265903944. Its totient is φ = 12105354649600.

The previous prime is 12111310121191. The next prime is 12111310121279. The reversal of 12111310121201 is 10212101311121.

It can be written as a sum of positive squares in 4 ways, for example, as 5259730576 + 12106050390625 = 72524^2 + 3479375^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12111310121201 - 2²² = 12111305926897 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12111310121201.

It is not an unprimeable number, because it can be changed into a prime (12111310121291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130462001 + ... + 130554801.

It is an arithmetic number, because the mean of its divisors is an integer number (1514658237993).

Almost surely, 2^{12111310121201} is an apocalyptic number.

It is an amenable number.

12111310121201 is a deficient number, since it is larger than the sum of its proper divisors (5955782743).

12111310121201 is an equidigital number, since it uses as much as digits as its factorization.

12111310121201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155571.

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 12111310121201 its reverse (10212101311121), we get a palindrome (22323411432322).

The spelling of 12111310121201 in words is "twelve trillion, one hundred eleven billion, three hundred ten million, one hundred twenty-one thousand, two hundred one".