111102111202123 has 4 divisors (see below), whose sum is σ = 111600326947648. Its totient is φ = 110603895456600.

The previous prime is 111102111202081. The next prime is 111102111202171. The reversal of 111102111202123 is 321202111201111.

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 111102111202123 - 2²⁹ = 111101574331211 is a prime.

It is a super-2 number, since 2×111102111202123² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111102111202123.

It is not an unprimeable number, because it can be changed into a prime (111102111902123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249107872428 + ... + 249107872873.

It is an arithmetic number, because the mean of its divisors is an integer number (27900081736912).

Almost surely, 2^{111102111202123} is an apocalyptic number.

111102111202123 is a deficient number, since it is larger than the sum of its proper divisors (498215745525).

111102111202123 is an equidigital number, since it uses as much as digits as its factorization.

111102111202123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498215745524.

The product of its (nonzero) digits is 48, while the sum is 19.

Adding to 111102111202123 its reverse (321202111201111), we get a palindrome (432304222403234).

The spelling of 111102111202123 in words is "one hundred eleven trillion, one hundred two billion, one hundred eleven million, two hundred two thousand, one hundred twenty-three".