12111222001201 has 4 divisors (see below), whose sum is σ = 12528850346100. Its totient is φ = 11693593656304.

The previous prime is 12111222001181. The next prime is 12111222001253. The reversal of 12111222001201 is 10210022211121.

12111222001201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7409801189025 + 4701420812176 = 2722095^2 + 2168276^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12111222001201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12111223001201) 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, 208814172406 + ... + 208814172463.

It is an arithmetic number, because the mean of its divisors is an integer number (3132212586525).

Almost surely, 2^{12111222001201} is an apocalyptic number.

It is an amenable number.

12111222001201 is a deficient number, since it is larger than the sum of its proper divisors (417628344899).

12111222001201 is an equidigital number, since it uses as much as digits as its factorization.

12111222001201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417628344898.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12111222001201 its reverse (10210022211121), we get a palindrome (22321244212322).

The spelling of 12111222001201 in words is "twelve trillion, one hundred eleven billion, two hundred twenty-two million, one thousand, two hundred one".