100110220022221 has 4 divisors (see below), whose sum is σ = 100144633988700. Its totient is φ = 100075806055744.

The previous prime is 100110220022209. The next prime is 100110220022237. The reversal of 100110220022221 is 122220022011001.

It is a happy number.

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 91358976959721 + 8751243062500 = 9558189^2 + 2958250^2 .

It is a cyclic number.

It is not a de Polignac number, because 100110220022221 - 2²³ = 100110211633613 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100110220022195 and 100110220022204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100110220082221) 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, 17206978876 + ... + 17206984693.

It is an arithmetic number, because the mean of its divisors is an integer number (25036158497175).

Almost surely, 2^{100110220022221} is an apocalyptic number.

It is an amenable number.

100110220022221 is a deficient number, since it is larger than the sum of its proper divisors (34413966479).

100110220022221 is an equidigital number, since it uses as much as digits as its factorization.

100110220022221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34413966478.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 100110220022221 its reverse (122220022011001), we get a palindrome (222330242033222).

The spelling of 100110220022221 in words is "one hundred trillion, one hundred ten billion, two hundred twenty million, twenty-two thousand, two hundred twenty-one".