221111230223 has 4 divisors (see below), whose sum is σ = 238119786408. Its totient is φ = 204102674040.

The previous prime is 221111230213. The next prime is 221111230247. The reversal of 221111230223 is 322032111122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 221111230223 - 2⁸ = 221111229967 is a prime.

It is a super-2 number, since 2×221111230223² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221111230195 and 221111230204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221111230213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8504278073 + ... + 8504278098.

It is an arithmetic number, because the mean of its divisors is an integer number (59529946602).

Almost surely, 2^221111230223 is an apocalyptic number.

221111230223 is a deficient number, since it is larger than the sum of its proper divisors (17008556185).

221111230223 is a wasteful number, since it uses less digits than its factorization.

221111230223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17008556184.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 221111230223 its reverse (322032111122), we get a palindrome (543143341345).

The spelling of 221111230223 in words is "two hundred twenty-one billion, one hundred eleven million, two hundred thirty thousand, two hundred twenty-three".