201100103 has 4 divisors (see below), whose sum is σ = 204396888. Its totient is φ = 197803320.

The previous prime is 201100099. The next prime is 201100117. The reversal of 201100103 is 301001102.

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

It is a cyclic number.

It is not a de Polignac number, because 201100103 - 2² = 201100099 is a prime.

It is a super-2 number, since 2×201100103² = 80882502853221218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201100153) 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 3 ways as a sum of consecutive naturals, for example, 1648301 + ... + 1648422.

It is an arithmetic number, because the mean of its divisors is an integer number (51099222).

Almost surely, 2^201100103 is an apocalyptic number.

201100103 is a deficient number, since it is larger than the sum of its proper divisors (3296785).

201100103 is an equidigital number, since it uses as much as digits as its factorization.

201100103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3296784.

The product of its (nonzero) digits is 6, while the sum is 8.

The square root of 201100103 is about 14180.9767999246. The cubic root of 201100103 is about 585.8738278991.

Adding to 201100103 its reverse (301001102), we get a palindrome (502101205).

Subtracting 201100103 from its reverse (301001102), we obtain a palindrome (99900999).

The spelling of 201100103 in words is "two hundred one million, one hundred thousand, one hundred three".