221103323220 has 48 divisors (see below), whose sum is σ = 666711561600. Its totient is φ = 54425433216.

The previous prime is 221103323219. The next prime is 221103323237. The reversal of 221103323220 is 22323301122.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141732120 + ... + 141733679.

It is an arithmetic number, because the mean of its divisors is an integer number (13889824200).

Almost surely, 2^221103323220 is an apocalyptic number.

221103323220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221103323220 is an abundant number, since it is smaller than the sum of its proper divisors (445608238380).

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

221103323220 is a wasteful number, since it uses less digits than its factorization.

221103323220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283465824 (or 283465822 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 221103323220 its reverse (22323301122), we get a palindrome (243426624342).

The spelling of 221103323220 in words is "two hundred twenty-one billion, one hundred three million, three hundred twenty-three thousand, two hundred twenty".