200121101202009 has 16 divisors (see below), whose sum is σ = 287385096801600. Its totient is φ = 123137852300736.

The previous prime is 200121101201999. The next prime is 200121101202013. The reversal of 200121101202009 is 900202101121002.

It is not a de Polignac number, because 200121101202009 - 2⁷ = 200121101201881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (200121101202059) 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, 282862854 + ... + 283569455.

It is an arithmetic number, because the mean of its divisors is an integer number (17961568550100).

Almost surely, 2^{200121101202009} is an apocalyptic number.

It is an amenable number.

200121101202009 is a deficient number, since it is larger than the sum of its proper divisors (87263995599591).

200121101202009 is a wasteful number, since it uses less digits than its factorization.

200121101202009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566441384.

The product of its (nonzero) digits is 144, while the sum is 21.

The spelling of 200121101202009 in words is "two hundred trillion, one hundred twenty-one billion, one hundred one million, two hundred two thousand, nine".