111202110122123 has 4 divisors (see below), whose sum is σ = 117743410717560. Its totient is φ = 104660809526688.

The previous prime is 111202110122101. The next prime is 111202110122177. The reversal of 111202110122123 is 321221011202111.

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 111202110122123 - 2²⁰ = 111202109073547 is a prime.

It is a super-2 number, since 2×111202110122123² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111202110122095 and 111202110122104.

It is not an unprimeable number, because it can be changed into a prime (111202110182123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3270650297693 + ... + 3270650297726.

It is an arithmetic number, because the mean of its divisors is an integer number (29435852679390).

Almost surely, 2^{111202110122123} is an apocalyptic number.

111202110122123 is a deficient number, since it is larger than the sum of its proper divisors (6541300595437).

111202110122123 is an equidigital number, since it uses as much as digits as its factorization.

111202110122123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6541300595436.

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 111202110122123 its reverse (321221011202111), we get a palindrome (432423121324234).

The spelling of 111202110122123 in words is "one hundred eleven trillion, two hundred two billion, one hundred ten million, one hundred twenty-two thousand, one hundred twenty-three".