121101211111112 has 32 divisors (see below), whose sum is σ = 227444832990720. Its totient is φ = 60449310768000.

The previous prime is 121101211111079. The next prime is 121101211111147. The reversal of 121101211111112 is 211111112101121.

It is a happy 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, 14142188 + ... + 21028644.

It is an arithmetic number, because the mean of its divisors is an integer number (7107651030960).

Almost surely, 2^{121101211111112} is an apocalyptic number.

It is an amenable number.

121101211111112 is a deficient number, since it is larger than the sum of its proper divisors (106343621879608).

121101211111112 is a wasteful number, since it uses less digits than its factorization.

121101211111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6890141 (or 6890137 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 17.

Adding to 121101211111112 its reverse (211111112101121), we get a palindrome (332212323212233).

Subtracting 121101211111112 from its reverse (211111112101121), we obtain a palindrome (90009900990009).

The spelling of 121101211111112 in words is "one hundred twenty-one trillion, one hundred one billion, two hundred eleven million, one hundred eleven thousand, one hundred twelve".