121112101110012 has 48 divisors (see below), whose sum is σ = 287234297745024. Its totient is φ = 39707960472000.

The previous prime is 121112101109911. The next prime is 121112101110017. The reversal of 121112101110012 is 210011101211121.

It is a junction number, because it is equal to n+sod(n) for n = 121112101109973 and 121112101110000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121112101110017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29871187 + ... + 33682517.

It is an arithmetic number, because the mean of its divisors is an integer number (5984047869688).

Almost surely, 2^{121112101110012} is an apocalyptic number.

121112101110012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121112101110012 is an abundant number, since it is smaller than the sum of its proper divisors (166122196635012).

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

121112101110012 is a wasteful number, since it uses less digits than its factorization.

121112101110012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3854810 (or 3854808 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 121112101110012 its reverse (210011101211121), we get a palindrome (331123202321133).

The spelling of 121112101110012 in words is "one hundred twenty-one trillion, one hundred twelve billion, one hundred one million, one hundred ten thousand, twelve".