121112220111112 has 16 divisors (see below), whose sum is σ = 227129878305360. Its totient is φ = 60544252563024.

The previous prime is 121112220111097. The next prime is 121112220111121. The reversal of 121112220111112 is 211111022211121.

It is a self number, because there is not a number n which added to its sum of digits gives 121112220111112.

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, 1482143158 + ... + 1482224869.

It is an arithmetic number, because the mean of its divisors is an integer number (14195617394085).

Almost surely, 2^{121112220111112} is an apocalyptic number.

It is an amenable number.

121112220111112 is a deficient number, since it is larger than the sum of its proper divisors (106017658194248).

121112220111112 is a wasteful number, since it uses less digits than its factorization.

121112220111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2964373140 (or 2964373136 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 121112220111112 its reverse (211111022211121), we get a palindrome (332223242322233).

The spelling of 121112220111112 in words is "one hundred twenty-one trillion, one hundred twelve billion, two hundred twenty million, one hundred eleven thousand, one hundred twelve".