111523220122 has 4 divisors (see below), whose sum is σ = 167284830186. Its totient is φ = 55761610060.

The previous prime is 111523220087. The next prime is 111523220209. The reversal of 111523220122 is 221022325111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 89867448841 + 21655771281 = 299779^2 + 147159^2 .

It is a junction number, because it is equal to n+sod(n) for n = 111523220093 and 111523220102.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27880805029 + ... + 27880805032.

Almost surely, 2^111523220122 is an apocalyptic number.

111523220122 is a deficient number, since it is larger than the sum of its proper divisors (55761610064).

111523220122 is an equidigital number, since it uses as much as digits as its factorization.

111523220122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55761610063.

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 111523220122 its reverse (221022325111), we get a palindrome (332545545233).

The spelling of 111523220122 in words is "one hundred eleven billion, five hundred twenty-three million, two hundred twenty thousand, one hundred twenty-two".