111312441242 has 4 divisors (see below), whose sum is σ = 166968661866. Its totient is φ = 55656220620.

The previous prime is 111312441187. The next prime is 111312441287. The reversal of 111312441242 is 242144213111.

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., 98200130161 + 13112311081 = 313369^2 + 114509^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27828110309 + ... + 27828110312.

Almost surely, 2^111312441242 is an apocalyptic number.

111312441242 is a deficient number, since it is larger than the sum of its proper divisors (55656220624).

111312441242 is an equidigital number, since it uses as much as digits as its factorization.

111312441242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55656220623.

The product of its digits is 1536, while the sum is 26.

Adding to 111312441242 its reverse (242144213111), we get a palindrome (353456654353).

The spelling of 111312441242 in words is "one hundred eleven billion, three hundred twelve million, four hundred forty-one thousand, two hundred forty-two".