221100113223 has 72 divisors (see below), whose sum is σ = 369862811136. Its totient is φ = 126928090080.

The previous prime is 221100113189. The next prime is 221100113233. The reversal of 221100113223 is 322311001122.

It is not a de Polignac number, because 221100113223 - 2¹⁰ = 221100112199 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221100113196 and 221100113205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221100113233) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2536990 + ... + 2622692.

It is an arithmetic number, because the mean of its divisors is an integer number (5136983488).

Almost surely, 2^221100113223 is an apocalyptic number.

221100113223 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

221100113223 is a deficient number, since it is larger than the sum of its proper divisors (148762697913).

221100113223 is a wasteful number, since it uses less digits than its factorization.

221100113223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85857 (or 85843 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 221100113223 its reverse (322311001122), we get a palindrome (543411114345).

The spelling of 221100113223 in words is "two hundred twenty-one billion, one hundred million, one hundred thirteen thousand, two hundred twenty-three".