121001020200112 has 120 divisors (see below), whose sum is σ = 264916719244800. Its totient is φ = 53414717900544.

The previous prime is 121001020200091. The next prime is 121001020200121. The reversal of 121001020200112 is 211002020100121.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 121001020200092 and 121001020200101.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 989973339 + ... + 990095557.

It is an arithmetic number, because the mean of its divisors is an integer number (2207639327040).

Almost surely, 2^{121001020200112} 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 121001020200112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132458359622400).

121001020200112 is an abundant number, since it is smaller than the sum of its proper divisors (143915699044688).

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

121001020200112 is a wasteful number, since it uses less digits than its factorization.

121001020200112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138195 (or 138176 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 121001020200112 its reverse (211002020100121), we get a palindrome (332003040300233).

Subtracting 121001020200112 from its reverse (211002020100121), we obtain a palindrome (90000999900009).

The spelling of 121001020200112 in words is "one hundred twenty-one trillion, one billion, twenty million, two hundred thousand, one hundred twelve".