221102222200220 has 24 divisors (see below), whose sum is σ = 464498845491408. Its totient is φ = 88405807190400.

The previous prime is 221102222200187. The next prime is 221102222200229. The reversal of 221102222200220 is 22002222201122.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 221102222200192 and 221102222200201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221102222200229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2192553926 + ... + 2192654765.

It is an arithmetic number, because the mean of its divisors is an integer number (19354118562142).

Almost surely, 2^{221102222200220} is an apocalyptic number.

221102222200220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221102222200220 is an abundant number, since it is smaller than the sum of its proper divisors (243396623291188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221102222200220 is a wasteful number, since it uses less digits than its factorization.

221102222200220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4385211221 (or 4385211219 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 221102222200220 its reverse (22002222201122), we get a palindrome (243104444401342).

The spelling of 221102222200220 in words is "two hundred twenty-one trillion, one hundred two billion, two hundred twenty-two million, two hundred thousand, two hundred twenty".