121112220020202 has 56 divisors (see below), whose sum is σ = 272422558799460. Its totient is φ = 40364119972800.

The previous prime is 121112220020191. The next prime is 121112220020251. The reversal of 121112220020202 is 202020022211121.

It is a happy number.

121112220020202 is a `hidden beast` number, since 1 + 211 + 12 + 220 + 0 + 20 + 202 = 666.

121112220020202 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 117748953785961 + 3363266234241 = 10851219^2 + 1833921^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 2087574 + ... + 15702942.

Almost surely, 2^{121112220020202} is an apocalyptic number.

121112220020202 is an abundant number, since it is smaller than the sum of its proper divisors (151310338779258).

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

121112220020202 is an equidigital number, since it uses as much as digits as its factorization.

121112220020202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13621490 (or 13621475 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 121112220020202 its reverse (202020022211121), we get a palindrome (323132242231323).

The spelling of 121112220020202 in words is "one hundred twenty-one trillion, one hundred twelve billion, two hundred twenty million, twenty thousand, two hundred two".