12012201221201 has 4 divisors (see below), whose sum is σ = 12012307560804. Its totient is φ = 12012094881600.

The previous prime is 12012201221191. The next prime is 12012201221219. The reversal of 12012201221201 is 10212210221021.

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 6001147676176 + 6011053545025 = 2449724^2 + 2451745^2 .

It is a cyclic number.

It is not a de Polignac number, because 12012201221201 - 2²² = 12012197026897 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 12012201221201.

It is not an unprimeable number, because it can be changed into a prime (12012201251201) 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, 53000180 + ... + 53226341.

It is an arithmetic number, because the mean of its divisors is an integer number (3003076890201).

Almost surely, 2^{12012201221201} is an apocalyptic number.

It is an amenable number.

12012201221201 is a deficient number, since it is larger than the sum of its proper divisors (106339603).

12012201221201 is a wasteful number, since it uses less digits than its factorization.

12012201221201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106339602.

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

Adding to 12012201221201 its reverse (10212210221021), we get a palindrome (22224411442222).

The spelling of 12012201221201 in words is "twelve trillion, twelve billion, two hundred one million, two hundred twenty-one thousand, two hundred one".