121110111222 has 8 divisors (see below), whose sum is σ = 242220222456. Its totient is φ = 40370037072.

The previous prime is 121110111217. The next prime is 121110111223. The reversal of 121110111222 is 222111011121.

It is a happy number.

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

121110111222 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121110111223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10092509263 + ... + 10092509274.

It is an arithmetic number, because the mean of its divisors is an integer number (30277527807).

Almost surely, 2^121110111222 is an apocalyptic number.

121110111222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

121110111222 is a wasteful number, since it uses less digits than its factorization.

121110111222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20185018542.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 121110111222 its reverse (222111011121), we get a palindrome (343221122343).

The spelling of 121110111222 in words is "one hundred twenty-one billion, one hundred ten million, one hundred eleven thousand, two hundred twenty-two".