10001120203 has 4 divisors (see below), whose sum is σ = 10011749328. Its totient is φ = 9990491080.

The previous prime is 10001120183. The next prime is 10001120221. The reversal of 10001120203 is 30202110001.

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 10001120203 - 2⁹ = 10001119691 is a prime.

It is a super-2 number, since 2×10001120203² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10001120203.

It is not an unprimeable number, because it can be changed into a prime (10001120243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5313151 + ... + 5315032.

It is an arithmetic number, because the mean of its divisors is an integer number (2502937332).

Almost surely, 2^10001120203 is an apocalyptic number.

10001120203 is a deficient number, since it is larger than the sum of its proper divisors (10629125).

10001120203 is an equidigital number, since it uses as much as digits as its factorization.

10001120203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10629124.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 10001120203 its reverse (30202110001), we get a palindrome (40203230204).

The spelling of 10001120203 in words is "ten billion, one million, one hundred twenty thousand, two hundred three".