11111031120042 has 96 divisors (see below), whose sum is σ = 28077104390400. Its totient is φ = 3110078488320.

The previous prime is 11111031119983. The next prime is 11111031120043. The reversal of 11111031120042 is 24002113011111.

11111031120042 is a `hidden beast` number, since 1 + 1 + 1 + 110 + 311 + 200 + 42 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 11111031119997 and 11111031120024.

It is not an unprimeable number, because it can be changed into a prime (11111031120043) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2683134 + ... + 5424137.

It is an arithmetic number, because the mean of its divisors is an integer number (292469837400).

Almost surely, 2^{11111031120042} is an apocalyptic number.

11111031120042 is an abundant number, since it is smaller than the sum of its proper divisors (16966073270358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11111031120042 is a wasteful number, since it uses less digits than its factorization.

11111031120042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8107508 (or 8107505 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 11111031120042 its reverse (24002113011111), we get a palindrome (35113144131153).

The spelling of 11111031120042 in words is "eleven trillion, one hundred eleven billion, thirty-one million, one hundred twenty thousand, forty-two".