12001311022201 has 4 divisors (see below), whose sum is σ = 12024889236900. Its totient is φ = 11977732807504.

The previous prime is 12001311022193. The next prime is 12001311022213. The reversal of 12001311022201 is 10222011310021.

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 9730937108025 + 2270373914176 = 3119445^2 + 1506776^2 .

It is a cyclic number.

It is not a de Polignac number, because 12001311022201 - 2³ = 12001311022193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12001311022301) 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, 11789106586 + ... + 11789107603.

It is an arithmetic number, because the mean of its divisors is an integer number (3006222309225).

Almost surely, 2^{12001311022201} is an apocalyptic number.

It is an amenable number.

12001311022201 is a deficient number, since it is larger than the sum of its proper divisors (23578214699).

12001311022201 is an equidigital number, since it uses as much as digits as its factorization.

12001311022201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23578214698.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 12001311022201 its reverse (10222011310021), we get a palindrome (22223322332222).

The spelling of 12001311022201 in words is "twelve trillion, one billion, three hundred eleven million, twenty-two thousand, two hundred one".