12221121220201 has 2 divisors, whose sum is σ = 12221121220202. Its totient is φ = 12221121220200.

The previous prime is 12221121220193. The next prime is 12221121220313. The reversal of 12221121220201 is 10202212112221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11918237198400 + 302884021801 = 3452280^2 + 550349^2 .

It is a cyclic number.

It is not a de Polignac number, because 12221121220201 - 2³ = 12221121220193 is a prime.

It is not a weakly prime, because it can be changed into another prime (12221121224201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110560610100 + 6110560610101.

It is an arithmetic number, because the mean of its divisors is an integer number (6110560610101).

Almost surely, 2^{12221121220201} is an apocalyptic number.

It is an amenable number.

12221121220201 is a deficient number, since it is larger than the sum of its proper divisors (1).

12221121220201 is an equidigital number, since it uses as much as digits as its factorization.

12221121220201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 12221121220201 its reverse (10202212112221), we get a palindrome (22423333332422).

The spelling of 12221121220201 in words is "twelve trillion, two hundred twenty-one billion, one hundred twenty-one million, two hundred twenty thousand, two hundred one".