221022122110201 has 4 divisors (see below), whose sum is σ = 221042979167332. Its totient is φ = 221001265053072.

The previous prime is 221022122110177. The next prime is 221022122110247. The reversal of 221022122110201 is 102011221220122.

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 5496938148025 + 215525183962176 = 2344555^2 + 14680776^2 .

It is a cyclic number.

It is not a de Polignac number, because 221022122110201 - 2⁷ = 221022122110073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221022122110001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10428512670 + ... + 10428533863.

It is an arithmetic number, because the mean of its divisors is an integer number (55260744791833).

Almost surely, 2^{221022122110201} is an apocalyptic number.

It is an amenable number.

221022122110201 is a deficient number, since it is larger than the sum of its proper divisors (20857057131).

221022122110201 is a wasteful number, since it uses less digits than its factorization.

221022122110201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20857057130.

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

Adding to 221022122110201 its reverse (102011221220122), we get a palindrome (323033343330323).

The spelling of 221022122110201 in words is "two hundred twenty-one trillion, twenty-two billion, one hundred twenty-two million, one hundred ten thousand, two hundred one".