111120213042 has 40 divisors (see below), whose sum is σ = 249115767516. Its totient is φ = 37021598208.

The previous prime is 111120213041. The next prime is 111120213077. The reversal of 111120213042 is 240312021111.

It can be written as a sum of positive squares in 2 ways, for example, as 100128577761 + 10991635281 = 316431^2 + 104841^2 .

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

It is not an unprimeable number, because it can be changed into a prime (111120213041) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 156718 + ... + 496790.

Almost surely, 2^111120213042 is an apocalyptic number.

111120213042 is an abundant number, since it is smaller than the sum of its proper divisors (137995554474).

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

111120213042 is a wasteful number, since it uses less digits than its factorization.

111120213042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342104 (or 342095 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 111120213042 its reverse (240312021111), we get a palindrome (351432234153).

The spelling of 111120213042 in words is "one hundred eleven billion, one hundred twenty million, two hundred thirteen thousand, forty-two".