201112111242 has 96 divisors (see below), whose sum is σ = 511639894272. Its totient is φ = 55886982912.

The previous prime is 201112111201. The next prime is 201112111271. The reversal of 201112111242 is 242111211102.

201112111242 is a `hidden beast` number, since 201 + 11 + 211 + 1 + 242 = 666.

201112111242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16138278 + ... + 16150734.

It is an arithmetic number, because the mean of its divisors is an integer number (5329582232).

Almost surely, 2^201112111242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201112111242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (255819947136).

201112111242 is an abundant number, since it is smaller than the sum of its proper divisors (310527783030).

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

201112111242 is a wasteful number, since it uses less digits than its factorization.

201112111242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15972 (or 15969 counting only the distinct ones).

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

Adding to 201112111242 its reverse (242111211102), we get a palindrome (443223322344).

The spelling of 201112111242 in words is "two hundred one billion, one hundred twelve million, one hundred eleven thousand, two hundred forty-two".