111121211222223 has 8 divisors (see below), whose sum is σ = 152165982935088. Its totient is φ = 72078623495424.

The previous prime is 111121211222179. The next prime is 111121211222267. The reversal of 111121211222223 is 322222112121111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (111121211222179) and next prime (111121211222267).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111121211222223 - 2¹⁰ = 111121211221199 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111121211222193 and 111121211222202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111121211222323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 500545996386 + ... + 500545996607.

It is an arithmetic number, because the mean of its divisors is an integer number (19020747866886).

Almost surely, 2^{111121211222223} is an apocalyptic number.

111121211222223 is a deficient number, since it is larger than the sum of its proper divisors (41044771712865).

111121211222223 is a wasteful number, since it uses less digits than its factorization.

111121211222223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001091993033.

The product of its digits is 384, while the sum is 24.

Adding to 111121211222223 its reverse (322222112121111), we get a palindrome (433343323343334).

The spelling of 111121211222223 in words is "one hundred eleven trillion, one hundred twenty-one billion, two hundred eleven million, two hundred twenty-two thousand, two hundred twenty-three".