11111223442 has 16 divisors (see below), whose sum is σ = 18412156800. Its totient is φ = 4986624240.

The previous prime is 11111223437. The next prime is 11111223449. The reversal of 11111223442 is 24432211111.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (11111223449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3194817 + ... + 3198292.

It is an arithmetic number, because the mean of its divisors is an integer number (1150759800).

Almost surely, 2^11111223442 is an apocalyptic number.

11111223442 is a deficient number, since it is larger than the sum of its proper divisors (7300933358).

11111223442 is a wasteful number, since it uses less digits than its factorization.

11111223442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6393201.

The product of its digits is 384, while the sum is 22.

Adding to 11111223442 its reverse (24432211111), we get a palindrome (35543434553).

The spelling of 11111223442 in words is "eleven billion, one hundred eleven million, two hundred twenty-three thousand, four hundred forty-two".