111213213223 has 72 divisors (see below), whose sum is σ = 142092911520. Its totient is φ = 85140787200.

The previous prime is 111213213211. The next prime is 111213213229. The reversal of 111213213223 is 322312312111.

It is not a de Polignac number, because 111213213223 - 2⁵ = 111213213191 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111213213194 and 111213213203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111213213229) 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, 811775211 + ... + 811775347.

It is an arithmetic number, because the mean of its divisors is an integer number (1973512660).

Almost surely, 2^111213213223 is an apocalyptic number.

111213213223 is a deficient number, since it is larger than the sum of its proper divisors (30879698297).

111213213223 is a wasteful number, since it uses less digits than its factorization.

111213213223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445 (or 291 counting only the distinct ones).

The product of its digits is 432, while the sum is 22.

Adding to 111213213223 its reverse (322312312111), we get a palindrome (433525525334).

The spelling of 111213213223 in words is "one hundred eleven billion, two hundred thirteen million, two hundred thirteen thousand, two hundred twenty-three".