221211112223 has 16 divisors (see below), whose sum is σ = 246008448000. Its totient is φ = 198036754272.

The previous prime is 221211112217. The next prime is 221211112249. The reversal of 221211112223 is 322211112122.

It is a cyclic number.

It is not a de Polignac number, because 221211112223 - 2¹⁴ = 221211095839 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221211112195 and 221211112204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221211112823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4245083 + ... + 4296876.

It is an arithmetic number, because the mean of its divisors is an integer number (15375528000).

Almost surely, 2^221211112223 is an apocalyptic number.

221211112223 is a deficient number, since it is larger than the sum of its proper divisors (24797335777).

221211112223 is a wasteful number, since it uses less digits than its factorization.

221211112223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8542054.

The product of its digits is 192, while the sum is 20.

Adding to 221211112223 its reverse (322211112122), we get a palindrome (543422224345).

The spelling of 221211112223 in words is "two hundred twenty-one billion, two hundred eleven million, one hundred twelve thousand, two hundred twenty-three".