2201221122201 has 6 divisors (see below), whose sum is σ = 3179541620970. Its totient is φ = 1467480748128.

The previous prime is 2201221122179. The next prime is 2201221122229. The reversal of 2201221122201 is 1022211221022.

It is a happy number.

2201221122201 is a `hidden beast` number, since 220 + 1 + 221 + 1 + 2 + 220 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2167740905625 + 33480216576 = 1472325^2 + 182976^2 .

It is not a de Polignac number, because 2201221122201 - 2⁵ = 2201221122169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2201221122251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 122290062336 + ... + 122290062353.

It is an arithmetic number, because the mean of its divisors is an integer number (529923603495).

Almost surely, 2^{2201221122201} is an apocalyptic number.

It is an amenable number.

2201221122201 is a deficient number, since it is larger than the sum of its proper divisors (978320498769).

2201221122201 is a wasteful number, since it uses less digits than its factorization.

2201221122201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244580124695 (or 244580124692 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2201221122201 its reverse (1022211221022), we get a palindrome (3223432343223).

The spelling of 2201221122201 in words is "two trillion, two hundred one billion, two hundred twenty-one million, one hundred twenty-two thousand, two hundred one".