111311211232223 has 4 divisors (see below), whose sum is σ = 111311234074560. Its totient is φ = 111311188389888.

The previous prime is 111311211232187. The next prime is 111311211232229. The reversal of 111311211232223 is 322232112113111.

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 111311211232223 - 2¹⁸ = 111311210970079 is a prime.

It is a super-3 number, since 3×111311211232223³ (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 = 111311211232192 and 111311211232201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111311211232229) 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, 850415 + ... + 14944752.

It is an arithmetic number, because the mean of its divisors is an integer number (27827808518640).

Almost surely, 2^{111311211232223} is an apocalyptic number.

111311211232223 is a deficient number, since it is larger than the sum of its proper divisors (22842337).

111311211232223 is an equidigital number, since it uses as much as digits as its factorization.

111311211232223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22842336.

The product of its digits is 864, while the sum is 26.

Adding to 111311211232223 its reverse (322232112113111), we get a palindrome (433543323345334).

The spelling of 111311211232223 in words is "one hundred eleven trillion, three hundred eleven billion, two hundred eleven million, two hundred thirty-two thousand, two hundred twenty-three".