2201220321101 has 4 divisors (see below), whose sum is σ = 2202026927100. Its totient is φ = 2200413715104.

The previous prime is 2201220321089. The next prime is 2201220321103. The reversal of 2201220321101 is 1011230221022.

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 1333854065476 + 867366255625 = 1154926^2 + 931325^2 .

It is a cyclic number.

It is not a de Polignac number, because 2201220321101 - 2⁶ = 2201220321037 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 2201220321101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2201220321103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 403298906 + ... + 403304363.

It is an arithmetic number, because the mean of its divisors is an integer number (550506731775).

Almost surely, 2^{2201220321101} is an apocalyptic number.

It is an amenable number.

2201220321101 is a deficient number, since it is larger than the sum of its proper divisors (806605999).

2201220321101 is an equidigital number, since it uses as much as digits as its factorization.

2201220321101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806605998.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 2201220321101 its reverse (1011230221022), we get a palindrome (3212450542123).

The spelling of 2201220321101 in words is "two trillion, two hundred one billion, two hundred twenty million, three hundred twenty-one thousand, one hundred one".