121100002209 has 16 divisors (see below), whose sum is σ = 179414491200. Its totient is φ = 80730148608.

The previous prime is 121100002187. The next prime is 121100002229. The reversal of 121100002209 is 902200001121.

It is not a de Polignac number, because 121100002209 - 2²¹ = 121097905057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121100002191 and 121100002200.

It is not an unprimeable number, because it can be changed into a prime (121100002229) 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, 754177 + ... + 900545.

It is an arithmetic number, because the mean of its divisors is an integer number (11213405700).

Almost surely, 2^121100002209 is an apocalyptic number.

It is an amenable number.

121100002209 is a deficient number, since it is larger than the sum of its proper divisors (58314488991).

121100002209 is a wasteful number, since it uses less digits than its factorization.

121100002209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177021 (or 177015 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The spelling of 121100002209 in words is "one hundred twenty-one billion, one hundred million, two thousand, two hundred nine".