111211121222 has 8 divisors (see below), whose sum is σ = 169644083400. Its totient is φ = 54663093424.

The previous prime is 111211121209. The next prime is 111211121257. The reversal of 111211121222 is 222121112111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 111211121222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 471233447 + ... + 471233682.

It is an arithmetic number, because the mean of its divisors is an integer number (21205510425).

Almost surely, 2^111211121222 is an apocalyptic number.

111211121222 is a deficient number, since it is larger than the sum of its proper divisors (58432962178).

111211121222 is an equidigital number, since it uses as much as digits as its factorization.

111211121222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 942467190.

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

Adding to 111211121222 its reverse (222121112111), we get a palindrome (333332233333).

The spelling of 111211121222 in words is "one hundred eleven billion, two hundred eleven million, one hundred twenty-one thousand, two hundred twenty-two".