101200209 has 16 divisors (see below), whose sum is σ = 148858560. Its totient is φ = 60642560.

The previous prime is 101200193. The next prime is 101200219. The reversal of 101200209 is 902002101.

It is a happy number.

It is not a de Polignac number, because 101200209 - 2⁴ = 101200193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (101200219) 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, 14292 + ... + 20165.

It is an arithmetic number, because the mean of its divisors is an integer number (9303660).

Almost surely, 2^101200209 is an apocalyptic number.

It is an amenable number.

101200209 is a deficient number, since it is larger than the sum of its proper divisors (47658351).

101200209 is a wasteful number, since it uses less digits than its factorization.

101200209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34560.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 101200209 is about 10059.8314598208. The cubic root of 101200209 is about 466.0084622727.

The spelling of 101200209 in words is "one hundred one million, two hundred thousand, two hundred nine".