121002100002200 has 24 divisors (see below), whose sum is σ = 281329882505580. Its totient is φ = 48400840000800.

The previous prime is 121002100002191. The next prime is 121002100002209. The reversal of 121002100002200 is 2200001200121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (121002100002191) and next prime (121002100002209).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121002100002209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 302505249806 + ... + 302505250205.

Almost surely, 2^{121002100002200} is an apocalyptic number.

121002100002200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121002100002200 is an abundant number, since it is smaller than the sum of its proper divisors (160327782503380).

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

121002100002200 is a wasteful number, since it uses less digits than its factorization.

121002100002200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605010500027 (or 605010500018 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 121002100002200 its reverse (2200001200121), we get a palindrome (123202101202321).

The spelling of 121002100002200 in words is "one hundred twenty-one trillion, two billion, one hundred million, two thousand, two hundred".