111111102222223 has 4 divisors (see below), whose sum is σ = 112449790200888. Its totient is φ = 109772414243560.

The previous prime is 111111102222143. The next prime is 111111102222259. The reversal of 111111102222223 is 322222201111111.

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 111111102222223 - 2⁹ = 111111102221711 is a prime.

It is a super-3 number, since 3×111111102222223³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111111102222194 and 111111102222203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111111102202223) 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, 669343989208 + ... + 669343989373.

It is an arithmetic number, because the mean of its divisors is an integer number (28112447550222).

Almost surely, 2^{111111102222223} is an apocalyptic number.

111111102222223 is a deficient number, since it is larger than the sum of its proper divisors (1338687978665).

111111102222223 is an equidigital number, since it uses as much as digits as its factorization.

111111102222223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1338687978664.

The product of its (nonzero) digits is 192, while the sum is 22.

Adding to 111111102222223 its reverse (322222201111111), we get a palindrome (433333303333334).

It can be divided in two parts, 1 and 11111102222223, that added together give a square (11111102222224 = 3333332²).

The spelling of 111111102222223 in words is "one hundred eleven trillion, one hundred eleven billion, one hundred two million, two hundred twenty-two thousand, two hundred twenty-three".