221102201221201 has 16 divisors (see below), whose sum is σ = 226402676527104. Its totient is φ = 215808970772304.

The previous prime is 221102201221169. The next prime is 221102201221207. The reversal of 221102201221201 is 102122102201122.

It is a cyclic number.

It is not a de Polignac number, because 221102201221201 - 2⁵ = 221102201221169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221102201221207) 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, 505454886 + ... + 505892128.

It is an arithmetic number, because the mean of its divisors is an integer number (14150167282944).

Almost surely, 2^{221102201221201} is an apocalyptic number.

It is an amenable number.

221102201221201 is a deficient number, since it is larger than the sum of its proper divisors (5300475305903).

221102201221201 is a wasteful number, since it uses less digits than its factorization.

221102201221201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445500.

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

Adding to 221102201221201 its reverse (102122102201122), we get a palindrome (323224303422323).

The spelling of 221102201221201 in words is "two hundred twenty-one trillion, one hundred two billion, two hundred one million, two hundred twenty-one thousand, two hundred one".