121110211112 has 16 divisors (see below), whose sum is σ = 247725432000. Its totient is φ = 55050095920.

The previous prime is 121110211111. The next prime is 121110211127. The reversal of 121110211112 is 211112011121.

It is not an unprimeable number, because it can be changed into a prime (121110211111) by changing a digit.

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, 688126112 + ... + 688126287.

It is an arithmetic number, because the mean of its divisors is an integer number (15482839500).

Almost surely, 2^121110211112 is an apocalyptic number.

It is an amenable number.

121110211112 is an abundant number, since it is smaller than the sum of its proper divisors (126615220888).

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

121110211112 is a wasteful number, since it uses less digits than its factorization.

121110211112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1376252416 (or 1376252412 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 121110211112 its reverse (211112011121), we get a palindrome (332222222233).

Subtracting 121110211112 from its reverse (211112011121), we obtain a square (90001800009 = 300003²).

The spelling of 121110211112 in words is "one hundred twenty-one billion, one hundred ten million, two hundred eleven thousand, one hundred twelve".