111111100222 has 16 divisors (see below), whose sum is σ = 167093798400. Its totient is φ = 55413351040.

The previous prime is 111111100181. The next prime is 111111100237. The reversal of 111111100222 is 222001111111.

It is a happy number.

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1186179 + ... + 1276417.

It is an arithmetic number, because the mean of its divisors is an integer number (10443362400).

Almost surely, 2^111111100222 is an apocalyptic number.

111111100222 is a deficient number, since it is larger than the sum of its proper divisors (55982698178).

111111100222 is an equidigital number, since it uses as much as digits as its factorization.

111111100222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91811.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111111100222 its reverse (222001111111), we get a palindrome (333112211333).

The spelling of 111111100222 in words is "one hundred eleven billion, one hundred eleven million, one hundred thousand, two hundred twenty-two".