221102112022201 has 4 divisors (see below), whose sum is σ = 221112191002612. Its totient is φ = 221092033041792.

The previous prime is 221102112022159. The next prime is 221102112022321. The reversal of 221102112022201 is 102220211201122.

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 130576877496576 + 90525234525625 = 11427024^2 + 9514475^2 .

It is a cyclic number.

It is not a de Polignac number, because 221102112022201 - 2³¹ = 221099964538553 is a prime.

It is a super-2 number, since 2×221102112022201² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221102112022601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5039457300 + ... + 5039501173.

It is an arithmetic number, because the mean of its divisors is an integer number (55278047750653).

Almost surely, 2^{221102112022201} is an apocalyptic number.

It is an amenable number.

221102112022201 is a deficient number, since it is larger than the sum of its proper divisors (10078980411).

221102112022201 is a wasteful number, since it uses less digits than its factorization.

221102112022201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10078980410.

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

Adding to 221102112022201 its reverse (102220211201122), we get a palindrome (323322323223323).

The spelling of 221102112022201 in words is "two hundred twenty-one trillion, one hundred two billion, one hundred twelve million, twenty-two thousand, two hundred one".