111100220211212 has 12 divisors (see below), whose sum is σ = 194480323338840. Its totient is φ = 55534413542976.

The previous prime is 111100220211187. The next prime is 111100220211289. The reversal of 111100220211212 is 212112022001111.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3924124733 + ... + 3924153044.

It is an arithmetic number, because the mean of its divisors is an integer number (16206693611570).

Almost surely, 2^{111100220211212} is an apocalyptic number.

It is an amenable number.

111100220211212 is a deficient number, since it is larger than the sum of its proper divisors (83380103127628).

111100220211212 is a wasteful number, since it uses less digits than its factorization.

111100220211212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7848281320 (or 7848281318 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 111100220211212 its reverse (212112022001111), we get a palindrome (323212242212323).

The spelling of 111100220211212 in words is "one hundred eleven trillion, one hundred billion, two hundred twenty million, two hundred eleven thousand, two hundred twelve".