201189099 has 4 divisors (see below), whose sum is σ = 268252136. Its totient is φ = 134126064.

The previous prime is 201189083. The next prime is 201189127. The reversal of 201189099 is 990981102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 201189099 - 2⁴ = 201189083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201189029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33531514 + ... + 33531519.

It is an arithmetic number, because the mean of its divisors is an integer number (67063034).

Almost surely, 2^201189099 is an apocalyptic number.

201189099 is a deficient number, since it is larger than the sum of its proper divisors (67063037).

201189099 is an equidigital number, since it uses as much as digits as its factorization.

201189099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67063036.

The product of its (nonzero) digits is 11664, while the sum is 39.

The square root of 201189099 is about 14184.1143184902. The cubic root of 201189099 is about 585.9602404813.

It can be divided in two parts, 20118909 and 9, that multiplied together give a palindrome (181070181).

The spelling of 201189099 in words is "two hundred one million, one hundred eighty-nine thousand, ninety-nine".