11112101442 has 144 divisors (see below), whose sum is σ = 28293923112. Its totient is φ = 3130306560.

The previous prime is 11112101437. The next prime is 11112101471. The reversal of 11112101442 is 24410121111.

11112101442 is a `hidden beast` number, since 1 + 1 + 11 + 210 + 1 + 442 = 666.

It can be written as a sum of positive squares in 12 ways, for example, as 4207987161 + 6904114281 = 64869^2 + 83091^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2499942 + ... + 2504382.

Almost surely, 2^11112101442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11112101442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14146961556).

11112101442 is an abundant number, since it is smaller than the sum of its proper divisors (17181821670).

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

11112101442 is a wasteful number, since it uses less digits than its factorization.

11112101442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4533 (or 4513 counting only the distinct ones).

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

Adding to 11112101442 its reverse (24410121111), we get a palindrome (35522222553).

The spelling of 11112101442 in words is "eleven billion, one hundred twelve million, one hundred one thousand, four hundred forty-two".