121201002100112 has 80 divisors (see below), whose sum is σ = 258478283295360. Its totient is φ = 54596138956800.

The previous prime is 121201002100109. The next prime is 121201002100117. The reversal of 121201002100112 is 211001200102121.

It is not an unprimeable number, because it can be changed into a prime (121201002100117) 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, 141952562 + ... + 142803822.

It is an arithmetic number, because the mean of its divisors is an integer number (3230978541192).

Almost surely, 2^{121201002100112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121201002100112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129239141647680).

121201002100112 is an abundant number, since it is smaller than the sum of its proper divisors (137277281195248).

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

121201002100112 is a wasteful number, since it uses less digits than its factorization.

121201002100112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858552 (or 858546 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121201002100112 its reverse (211001200102121), we get a palindrome (332202202202233).

The spelling of 121201002100112 in words is "one hundred twenty-one trillion, two hundred one billion, two million, one hundred thousand, one hundred twelve".