12012212102201 has 4 divisors (see below), whose sum is σ = 12012708888804. Its totient is φ = 12011715315600.

The previous prime is 12012212102179. The next prime is 12012212102207. The reversal of 12012212102201 is 10220121221021.

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 7959141228025 + 4053070874176 = 2821195^2 + 2013224^2 .

It is a cyclic number.

It is not a de Polignac number, because 12012212102201 - 2²⁶ = 12012144993337 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 12012212102201.

It is not an unprimeable number, because it can be changed into a prime (12012212102207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 248357030 + ... + 248405391.

It is an arithmetic number, because the mean of its divisors is an integer number (3003177222201).

Almost surely, 2^{12012212102201} is an apocalyptic number.

It is an amenable number.

12012212102201 is a deficient number, since it is larger than the sum of its proper divisors (496786603).

12012212102201 is an equidigital number, since it uses as much as digits as its factorization.

12012212102201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496786602.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12012212102201 its reverse (10220121221021), we get a palindrome (22232333323222).

The spelling of 12012212102201 in words is "twelve trillion, twelve billion, two hundred twelve million, one hundred two thousand, two hundred one".