221002220102201 has 4 divisors (see below), whose sum is σ = 221227044335232. Its totient is φ = 220777395869172.

The previous prime is 221002220102189. The next prime is 221002220102203. The reversal of 221002220102201 is 102201022200122.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 221002220102201 - 2¹⁰ = 221002220101177 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 221002220102201.

It is not an unprimeable number, because it can be changed into a prime (221002220102203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112412115041 + ... + 112412117006.

It is an arithmetic number, because the mean of its divisors is an integer number (55306761083808).

Almost surely, 2^{221002220102201} is an apocalyptic number.

It is an amenable number.

221002220102201 is a deficient number, since it is larger than the sum of its proper divisors (224824233031).

221002220102201 is an equidigital number, since it uses as much as digits as its factorization.

221002220102201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224824233030.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 221002220102201 its reverse (102201022200122), we get a palindrome (323203242302323).

The spelling of 221002220102201 in words is "two hundred twenty-one trillion, two billion, two hundred twenty million, one hundred two thousand, two hundred one".