200121220012201 has 2 divisors, whose sum is σ = 200121220012202. Its totient is φ = 200121220012200.

The previous prime is 200121220012171. The next prime is 200121220012213. The reversal of 200121220012201 is 102210022121002.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 194454630200601 + 5666589811600 = 13944699^2 + 2380460^2 .

It is a cyclic number.

It is not a de Polignac number, because 200121220012201 - 2³¹ = 200119072528553 is a prime.

It is not a weakly prime, because it can be changed into another prime (200121220012001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100060610006100 + 100060610006101.

It is an arithmetic number, because the mean of its divisors is an integer number (100060610006101).

Almost surely, 2^{200121220012201} is an apocalyptic number.

It is an amenable number.

200121220012201 is a deficient number, since it is larger than the sum of its proper divisors (1).

200121220012201 is an equidigital number, since it uses as much as digits as its factorization.

200121220012201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 200121220012201 its reverse (102210022121002), we get a palindrome (302331242133203).

The spelling of 200121220012201 in words is "two hundred trillion, one hundred twenty-one billion, two hundred twenty million, twelve thousand, two hundred one".