201101138 has 16 divisors (see below), whose sum is σ = 356633280. Its totient is φ = 83214096.

The previous prime is 201101137. The next prime is 201101141. The reversal of 201101138 is 831101102.

It is not an unprimeable number, because it can be changed into a prime (201101137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247256 + ... + 248067.

It is an arithmetic number, because the mean of its divisors is an integer number (22289580).

Almost surely, 2^201101138 is an apocalyptic number.

201101138 is a deficient number, since it is larger than the sum of its proper divisors (155532142).

201101138 is a wasteful number, since it uses less digits than its factorization.

201101138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495361.

The product of its (nonzero) digits is 48, while the sum is 17.

The square root of 201101138 is about 14181.0132924273. The cubic root of 201101138 is about 585.8748330011.

The spelling of 201101138 in words is "two hundred one million, one hundred one thousand, one hundred thirty-eight".