221001010122201 has 16 divisors (see below), whose sum is σ = 320433897032064. Its totient is φ = 134919535590144.

The previous prime is 221001010122149. The next prime is 221001010122203. The reversal of 221001010122201 is 102221010100122.

It is not a de Polignac number, because 221001010122201 - 2¹³ = 221001010114009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221001010122203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58558824325 + ... + 58558828098.

It is an arithmetic number, because the mean of its divisors is an integer number (20027118564504).

Almost surely, 2^{221001010122201} is an apocalyptic number.

It is an amenable number.

221001010122201 is a deficient number, since it is larger than the sum of its proper divisors (99432886909863).

221001010122201 is a wasteful number, since it uses less digits than its factorization.

221001010122201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117117652480.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 221001010122201 its reverse (102221010100122), we get a palindrome (323222020222323).

The spelling of 221001010122201 in words is "two hundred twenty-one trillion, one billion, ten million, one hundred twenty-two thousand, two hundred one".