11111210442 has 24 divisors (see below), whose sum is σ = 24263855616. Its totient is φ = 3674572776.

The previous prime is 11111210441. The next prime is 11111210477. The reversal of 11111210442 is 24401211111.

11111210442 is a `hidden beast` number, since 1 + 1 + 1 + 11 + 210 + 442 = 666.

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 (11111210441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2427988 + ... + 2432559.

It is an arithmetic number, because the mean of its divisors is an integer number (1010993984).

Almost surely, 2^11111210442 is an apocalyptic number.

11111210442 is an abundant number, since it is smaller than the sum of its proper divisors (13152645174).

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

11111210442 is a wasteful number, since it uses less digits than its factorization.

11111210442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4860682 (or 4860679 counting only the distinct ones).

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

Adding to 11111210442 its reverse (24401211111), we get a palindrome (35512421553).

The spelling of 11111210442 in words is "eleven billion, one hundred eleven million, two hundred ten thousand, four hundred forty-two".