111212100223 has 8 divisors (see below), whose sum is σ = 127105026048. Its totient is φ = 95320545144.

The previous prime is 111212100217. The next prime is 111212100229. The reversal of 111212100223 is 322001212111.

It is an interprime number because it is at equal distance from previous prime (111212100217) and next prime (111212100229).

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

It is a cyclic number.

It is not a de Polignac number, because 111212100223 - 2²¹ = 111210003071 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111212100197 and 111212100206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111212100229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162511 + ... + 498832.

It is an arithmetic number, because the mean of its divisors is an integer number (15888128256).

Almost surely, 2^111212100223 is an apocalyptic number.

111212100223 is a deficient number, since it is larger than the sum of its proper divisors (15892925825).

111212100223 is an equidigital number, since it uses as much as digits as its factorization.

111212100223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685373.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 111212100223 its reverse (322001212111), we get a palindrome (433213312334).

The spelling of 111212100223 in words is "one hundred eleven billion, two hundred twelve million, one hundred thousand, two hundred twenty-three".