111222111042 has 80 divisors (see below), whose sum is σ = 299813490240. Its totient is φ = 30105227232.

The previous prime is 111222111031. The next prime is 111222111043. The reversal of 111222111042 is 240111222111.

It is a super-3 number, since 3×111222111042³ (a number of 34 digits) contains 333 as substring.

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 (111222111043) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2559493 + ... + 2602584.

It is an arithmetic number, because the mean of its divisors is an integer number (3747668628).

Almost surely, 2^111222111042 is an apocalyptic number.

111222111042 is an abundant number, since it is smaller than the sum of its proper divisors (188591379198).

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

111222111042 is a wasteful number, since it uses less digits than its factorization.

111222111042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5162117 (or 5162108 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 111222111042 its reverse (240111222111), we get a palindrome (351333333153).

The spelling of 111222111042 in words is "one hundred eleven billion, two hundred twenty-two million, one hundred eleven thousand, forty-two".